O.

O
O (ō). 1. O, the fifteenth letter of the English alphabet, derives its form, value, and name from the Greek O, through the Latin. The letter came into the Greek from the Phœnician, which possibly derived it ultimately from the Egyptian. Etymologically, the letter o is most closely related to a, e, and u; as in E. bone, AS. bān; E. stone, AS. stān; E. broke, AS. brecan to break; E. bore, AS. beran to bear; E. dove, AS. dūfe; E. toft, tuft; tone, tune; number, F. nombre.
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The letter o has several vowel sounds, the principal of which are its long sound, as in bone, its short sound, as in nod, and the sounds heard in the words orb, son, do (feod), and wolf (book). In connection with the other vowels it forms several digraphs and diphthongs. See Guide to Pronunciation, §§ 107-129.
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2. Among the ancients, O was a mark of triple time, from the notion that the ternary, or number 3, is the most perfect of numbers, and properly expressed by a circle, the most perfect figure.
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O was also anciently used to represent 11: with a dash over it (Ō), 11,000.
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O
O (ō), n.; pl. O's or Oes (ōz). 1. The letter O, or its sound. “Mouthing out his hollow oes and aes.” Tennyson.
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2. Something shaped like the letter O; a circle or oval. “This wooden O [Globe Theater]”. Shak.
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3. A cipher; zero. [R.]
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Thou art an O without a figure. Shak.
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O'
O'. [Ir. o a descendant.] A prefix to Irish family names, which signifies grandson or descendant of, and is a character of dignity; as, O'Neil, O'Carrol.
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O'
O' (ō; unaccented &ouptack_;), prep. A shortened form of of or on. “At the turning o' the tide.” Shak.
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O
O (ō), a. [See One.] One. [Obs.] Chaucer. “Alle thre but o God.” Piers Plowman.
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O
O (ō), interj. An exclamation used in calling or directly addressing a person or personified object; also, as an emotional or impassioned exclamation expressing pain, grief, surprise, desire, fear, etc.
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For ever, O Lord, thy word is settled in heaven. Ps. cxix. 89.
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O how love I thy law ! it is my meditation all the day. Ps. cxix. 97.
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&hand_; O is frequently followed by an ellipsis and that, an in expressing a wish: “O [I wish] that Ishmael might live before thee!” Gen. xvii. 18; or in expressions of surprise, indignation, or regret: “O [it is sad] that such eyes should e'er meet other object!” Sheridan Knowles.
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&hand_; A distinction between the use of O and oh is insisted upon by some, namely, that O should be used only in direct address to a person or personified object, and should never be followed by the exclamation point, while Oh (or oh) should be used in exclamations where no direct appeal or address to an object is made, and may be followed by the exclamation point or not, according to the nature or construction of the sentence. Some insist that oh should be used only as an interjection expressing strong feeling. The form O, however, is, it seems, the one most commonly employed for both uses by modern writers and correctors for the press. “O, I am slain!” Shak.O what a fair and ministering angel!” “O sweet angel !” Longfellow.
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O for a kindling touch from that pure flame! Wordsworth.
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But she is in her grave, -- and oh
The difference to me!
Wordsworth.
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Oh for a lodge in some vast wilderness! Cowper.
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We should distinguish between the sign of the vocative and the emotional interjection, writing O for the former, and oh for the latter. Earle.
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O dear, and O dear me! [corrupted fr. F. O Dieu! or It. O Dio! O God! O Dio mio! O my God! Wyman.], exclamations expressive of various emotions, but usually promoted by surprise, consternation, grief, pain, etc.
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Oad
Oad (ōd), n. See Woad. [Obs.] Coles.
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Oaf
Oaf (ōf), n. [See Auf.] 1. Originally, an elf's child; a changeling left by fairies or goblins; hence, a deformed or foolish child; a simpleton; an idiot.
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2. A clumsy or awkward person.
Syn. -- klutz, clod, lummox, stumblebum.
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Oafish
Oaf"ish, a. Like an oaf; simple or clumsy. -- Oaf"ish*ness, n.
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Oak
Oak (ōk), n. [OE. oke, ok, ak, AS. āc; akin to D. eik, G. eiche, OHG. eih, Icel. eik, Sw. ek, Dan. eeg.]
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1. (Bot.) Any tree or shrub of the genus Quercus. The oaks have alternate leaves, often variously lobed, and staminate flowers in catkins. The fruit is a smooth nut, called an acorn, which is more or less inclosed in a scaly involucre called the cup or cupule. There are now recognized about three hundred species, of which nearly fifty occur in the United States, the rest in Europe, Asia, and the other parts of North America, a very few barely reaching the northern parts of South America and Africa. Many of the oaks form forest trees of grand proportions and live many centuries. The wood is usually hard and tough, and provided with conspicuous medullary rays, forming the silver grain.
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2. The strong wood or timber of the oak.
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&hand_; Among the true oaks in America are: Barren oak, or Black-jack, Quercus nigra. -- Basket oak, Quercus Michauxii. -- Black oak, Quercus tinctoria; -- called also yellow oak or quercitron oak. -- Bur oak (see under Bur.), Quercus macrocarpa; -- called also over-cup or mossy-cup oak. -- Chestnut oak, Quercus Prinus and Quercus densiflora. -- Chinquapin oak (see under Chinquapin), Quercus prinoides. -- Coast live oak, Quercus agrifolia, of California; -- also called enceno. -- Live oak (see under Live), Quercus virens, the best of all for shipbuilding; also, Quercus Chrysolepis, of California. -- Pin oak. Same as Swamp oak. -- Post oak, Quercus obtusifolia. -- Red oak, Quercus rubra. -- Scarlet oak, Quercus coccinea. -- Scrub oak, Quercus ilicifolia, Quercus undulata, etc. -- Shingle oak, Quercus imbricaria. -- Spanish oak, Quercus falcata. -- Swamp Spanish oak, or Pin oak, Quercus palustris. -- Swamp white oak, Quercus bicolor. -- Water oak, Quercus aquatica. -- Water white oak, Quercus lyrata. -- Willow oak, Quercus Phellos.
[1913 Webster] Among the true oaks in Europe are: Bitter oak, or Turkey oak, Quercus Cerris (see Cerris). -- Cork oak, Quercus Suber. -- English white oak, Quercus Robur. -- Evergreen oak, Holly oak, or Holm oak, Quercus Ilex. -- Kermes oak, Quercus coccifera. -- Nutgall oak, Quercus infectoria.

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&hand_; Among plants called oak, but not of the genus Quercus, are: African oak, a valuable timber tree (Oldfieldia Africana). -- Australian oak or She oak, any tree of the genus Casuarina (see Casuarina). -- Indian oak, the teak tree (see Teak). -- Jerusalem oak. See under Jerusalem. -- New Zealand oak, a sapindaceous tree (Alectryon excelsum). -- Poison oak, a shrub once not distinguished from poison ivy, but now restricted to Rhus toxicodendron or Rhus diversiloba. -- Silky oak or Silk-bark oak, an Australian tree (Grevillea robusta).
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Green oak, oak wood colored green by the growth of the mycelium of certain fungi. -- Oak apple, a large, smooth, round gall produced on the leaves of the American red oak by a gallfly (Cynips confluens). It is green and pulpy when young. -- Oak beauty (Zool.), a British geometrid moth (Biston prodromaria) whose larva feeds on the oak. -- Oak gall, a gall found on the oak. See 2d Gall. -- Oak leather (Bot.), the mycelium of a fungus which forms leatherlike patches in the fissures of oak wood. -- Oak pruner. (Zool.) See Pruner, the insect. -- Oak spangle, a kind of gall produced on the oak by the insect Diplolepis lenticularis. -- Oak wart, a wartlike gall on the twigs of an oak. -- The Oaks, one of the three great annual English horse races (the Derby and St. Leger being the others). It was instituted in 1779 by the Earl of Derby, and so called from his estate. -- To sport one's oak, to be “not at home to visitors,” signified by closing the outer (oaken) door of one's rooms. [Cant, Eng. Univ.]
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Oaken
Oak"en (?), a. [AS. ācen.] Made or consisting of oaks or of the wood of oaks. “In oaken bower.” Milton.
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Oaken timber, wherewith to build ships. Bacon.
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Oaker
Oak"er (ōk"&etilde_;r), n. See Ocher. [Obs.] Spenser.
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Oakling
Oak"ling (ōk"l&ibreve_;ng), n. A young oak. Evelyn.
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Oakum
Oak"um (ōk"ŭm), n. [AS. ācumba; pref. ā- (cf. G. er-, Goth. us-, orig. meaning, out) + cemban to comb, camb comb. See Comb.] 1. The material obtained by untwisting and picking into loose fiber old hemp ropes; -- used for calking the seams of ships, stopping leaks, etc.
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2. The coarse portion separated from flax or hemp in nackling. Knight.
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White oakum, that made from untarred rope.
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Oaky
Oak"y (ōk"&ybreve_;), n. Resembling oak; strong. Bp. Hall.
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Oar
Oar (ōr), n [AS. ār; akin to Icel. ār, Dan. aare, Sw. åra; perh. akin to E. row, v. Cf. Rowlock.]
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1. An implement for impelling a boat, being a slender piece of timber, usually ash or spruce, with a grip or handle at one end and a broad blade at the other. The part which rests in the rowlock is called the loom.
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&hand_; An oar is a kind of long paddle, which swings about a kind of fulcrum, called a rowlock, fixed to the side of the boat.
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2. An oarsman; a rower; as, he is a good oar.
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3. (Zool.) An oarlike swimming organ of various invertebrates.
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Oar cock (Zool.), the water rail. [Prov. Eng.] -- Spoon oar, an oar having the blade so curved as to afford a better hold upon the water in rowing. -- To boat the oars, to cease rowing, and lay the oars in the boat. -- To feather the oars. See under Feather., v. t. -- To lie on the oars, to cease pulling, raising the oars out of water, but not boating them; to cease from work of any kind; to be idle; to rest. -- To muffle the oars, to put something round that part which rests in the rowlock, to prevent noise in rowing. -- To put in one's oar, to give aid or advice; -- commonly used of a person who obtrudes aid or counsel not invited. -- To ship the oars, to place them in the rowlocks. -- To toss the oars, To peak the oars, to lift them from the rowlocks and hold them perpendicularly, the handle resting on the bottom of the boat. -- To trail oars, to allow them to trail in the water alongside of the boat. -- To unship the oars, to take them out of the rowlocks.
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Oar
Oar, v. t. & i. [imp. & p. p. Oared (?); p. pr. & vb. n. Oaring.] To row.Oared himself.” Shak.
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Oared with laboring arms. Pope.
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Oared
Oared (ōrd), a. 1. Furnished with oars; -- chiefly used in composition; as, a four-oared boat.
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2. (Zool.) (a) Having feet adapted for swimming. (b) Totipalmate; -- said of the feet of certain birds. See Illust. of Aves.
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Oared shrew (Zool.), an aquatic European shrew (Crossopus ciliatus); -- called also black water shrew.
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Oarfish
Oar"fish` (ōr"f&ibreve_;sh`), n. (Zool.) The ribbon fish.
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Oarfoot
Oar"foot` (ōr"f&oobreve_;t`), n. (Zool.) Any crustacean of the genus Remipes.
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Oar-footed
Oar"-foot`ed a. Having feet adapted for swimming.
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Oarless
Oar"less, a. Without oars. Sylvester.
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Oarlock
Oar"lock` (ōr"l&obreve_;k`), n. (Naut.), The notch, fork, or other device on the gunwale of a boat, in which the oar rests, and that holds the oar in place and acts as a fulcrum for rowing. Certain oarlocks are designed for use with oars having attached swivels, which insert into the oarlock and provide a firm pivot. Same as Rowlock{1}.
Syn. -- peg, pin, thole, tholepin, rowlock.
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Oarsman
Oars"man (ōrz"m&aitalic_;n), n.; pl. Oarsmen (-m&eitalic_;n). One who uses, or is skilled in the use of, an oar; a rower.
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At the prow of the boat, rose one of the oarsmen. Longfellow.
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oarsmanship
oarsmanship n. skill as an oarsman.
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Oarsweed
Oars"weed` (ōr"wēd`), n. (Bot.) Any large seaweed of the genus Laminaria; tangle; kelp. See Kelp.
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oarswoman
oarswoman n. a woman oarsman.
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Oary
Oar"y (ōr"&ybreve_;), a. Having the form or the use of an oar; as, the swan's oary feet. Milton. Addison.
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OAS
OAS n. The Organization of American States an international association of countries in the Western hemisphere. It was created in 1948 to promote military and economic and social and cultural cooperation. [acronym]
Syn. -- Organization of American States.
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Oasis
O"as*is (ō"&adot_;*s&ibreve_;s or &ouptack_;*ā"s&ibreve_;s; 277), n.; pl. Oases (-sēz). [L., fr. Gr. 'o`asis; cf. Copt. ouahe.] A fertile or green spot in a waste or desert, esp. in a sandy desert, where the water table approaches the surface. [wns=1] “The Arab does not love the desert; the Arab loves the oasis and green fields.”
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2. Hence: (fig.) Any refuge from a prevailing stressful, unpleasant, or annoying situation. [wns=2 & 3]
Syn. -- haven.
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My one oasis in the dust and drouth
Of city life.
Tennyson.
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Oast
Oast (ōst), n. [OE. ost, AS. āst; cf. Gr. a'i^qos burning heat.] A kiln to dry hops or malt; a cockle. Mortimer.
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Oat
Oat (ōt), n.; pl. Oats (ōts). [OE. ote, ate, AS. āta, akin to Fries. oat. Of uncertain origin.] 1. (Bot.) A well-known cereal grass (Avena sativa), and its edible grain, used as food and fodder; -- commonly used in the plural and in a collective sense.
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2. A musical pipe made of oat straw. [Obs.] Milton.
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Animated oats or Animal oats (Bot.), A grass (Avena sterilis) much like oats, but with a long spirally twisted awn which coils and uncoils with changes of moisture, and thus gives the grains an apparently automatic motion. -- Oat fowl (Zool.), the snow bunting; -- so called from its feeding on oats. [Prov. Eng.] -- Oat grass (Bot.), the name of several grasses more or less resembling oats, as Danthonia spicata, Danthonia sericea, and Arrhenatherum avenaceum, all common in parts of the United States. -- To feel one's oats, (a) to be conceited or self-important. [Slang] (b) to feel lively and energetic. -- To sow one's wild oats, to indulge in youthful dissipation. Thackeray. -- Wild oats (Bot.), a grass (Avena fatua) much resembling oats, and by some persons supposed to be the original of cultivated oats.
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Oatcake
Oat"cake (?), n. A cake made of oatmeal.
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Oaten
Oat"en (?), a. 1. Consisting of an oat straw or stem; as, an oaten pipe. Milton.
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2. Made of oatmeal; as, oaten cakes.
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Oath
Oath (ōth), n.; pl. Oaths (ō&thlig_;z). [OE. othe, oth, ath, AS. āð; akin to D. eed, OS. ēð, G. eid, Icel. eiðr, Sw. ed, Dan. eed, Goth. aiþs; cf. OIr. oeth.] 1. A solemn affirmation or declaration, made with a reverent appeal to God for the truth of what is affirmed. “I have an oath in heaven” Shak.
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An oath of secrecy for the concealing of those [inventions] which we think fit to keep secret. Bacon.
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2. A solemn affirmation, connected with a sacred object, or one regarded as sacred, as the temple, the altar, the blood of Abel, the Bible, the Koran, etc.
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3. (Law) An appeal (in verification of a statement made) to a superior sanction, in such a form as exposes the party making the appeal to an indictment for perjury if the statement be false.
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4. A careless and blasphemous use of the name of the divine Being, or anything divine or sacred, by way of appeal or as a profane exclamation or ejaculation; an expression of profane swearing. “A terrible oathShak.
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Oathable
Oath"a*ble (?), a. Capable of having an oath administered to. [Obs.] Shak.
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Oathbreaking
Oath"break`ing (?), n. The violation of an oath; perjury. Shak
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Oatmeal
Oat"meal` (?), n. 1. Meal made of oats. Gay.
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2. (Bot.) A plant of the genus Panicum; panic grass.
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Ob-
Ob- (?). [L. ob, prep. Cf. Epi-.] A prefix signifying to, toward, before, against, reversely, etc.; also, as a simple intensive; as in oblige, to bind to; obstacle, something standing before; object, lit., to throw against; obovate, reversely, or oppositely, ovate. Ob- is commonly assimilated before c, f, g, and p, to oc-, of-, og-, and op-.
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Obcompressed
Ob"com*pressed" (?). a. [Pref. ob- + compressed.] Compressed or flattened antero-posteriorly, or in a way opposite to the usual one.
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Obconical
Obconic
{ Ob*con"ic (?), Ob*con"ic*al (?), } a. [Pref. ob- + conic, conical.] Conical, but having the apex downward; inversely conical.
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Obcordate
Ob*cor"date (?), a. [Pref. ob- + cordate.] Heart-shaped, with the attachment at the pointed end; inversely cordate; as, an obcordate petal or leaf.
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Obdiplostemonous
Ob*dip`lo*stem"o*nous (?), a. [Pref. ob- + diplostemonous.] (Bot.) Having twice as many stamens as petals, those of the outer set being opposite the petals; -- said of flowers. Gray.
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Obdiplostemony
Ob*dip"lo*stem"o*ny (?), n. (Bot.) The condition of being obdiplostemonous.
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Obdormition
Ob"dor*mi"tion (?), n. [L. obdormire to fall asleep.] Sleep. [Obs.] Bp. Hall.
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Obduce
Ob*duce" (?), v. t. [L. obducere, obductum; ob (see Ob-) + ducere to lead.] To draw over, as a covering. [Obs.] Sir M. Hale.
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Obduct
Ob*duct" (&unr_;), v. t. [See Obduce.] To draw over; to cover. [Obs.] Sir T. Browne.
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Obduction
Ob*duc"tion (?), n. [L. obductio.] The act of drawing or laying over, as a covering. [Obs.]
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Obduracy
Ob"du*ra*cy (?), n. The duality or state of being obdurate; invincible hardness of heart; obstinacy.Obduracy and persistency.” Shak.
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The absolute completion of sin in final obduracy. South.
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Obdurate
Ob"du*rate (?), a. [L. obduratus, p. p. of obdurare to harden; ob (see Ob-)+ durare to harden, durus hard. See Dure.] 1. Hardened in feelings, esp. against moral or mollifying influences; unyielding; hard-hearted; stubbornly wicked.
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The very custom of evil makes the heart obdurate against whatsoever instructions to the contrary. Hooker.
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Art thou obdurate, flinty, hard as steel,
Nay, more than flint, for stone at rain relenteth?
Shak.
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2. Hard; harsh; rugged; rough; intractable.Obdurate consonants.” Swift.
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&hand_; Sometimes accented on the second syllable, especially by the older poets.
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There is no flesh in man's obdurate heart. Cowper.
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Syn. -- Hard; firm; unbending; inflexible; unyielding; stubborn; obstinate; impenitent; callous; unfeeling; insensible; unsusceptible. -- Obdurate, Callous, Hardened. Callous denotes a deadening of the sensibilities; as, a callous conscience. Hardened implies a general and settled disregard for the claims of interest, duty, and sympathy; as, hardened in vice. Obdurate implies an active resistance of the heart and will aganst the pleadings of compassion and humanity.
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-- Ob"du*rate*ly (#), adv. -- Ob"du*rate*ness, n.
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Obdurate
Ob"du*rate (?), v. t. To harden. [Obs.]
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Obduration
Ob"du*ra"tion (?), n. [L. obduratio.] A hardening of the heart; hardness of heart. [Obs.]
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Obdure
Ob*dure" (&obreve_;b*dūr"), v. t. To harden. [Obs.] Milton.
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Obdured
Obdure
{ Ob*dure" (&obreve_;b*dūr"), Ob*dured" (&obreve_;b*dūr"), } a. Obdurate; hard. [Obs.]
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This saw his hapless foes, but stood obdured. Milton.
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Obduredness
Obdureness
{ Ob*dure"ness, n., Ob*dur"ed*ness (?), n.} Hardness. [Obs.] Bp. Hall.
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Obe
Ob"e (ō"b&euptack_;), n. See Obi.
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Obeah
O*be"ah (?). n. Same as Obi. -- a. Of or pertaining to obi; as, the obeah man. B. Edwards.
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obechi
obechi n. A large Western African tree (Triplochiton scleroxcylon) having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds; it yields soft white to pale yellow wood.
Syn. -- obeche, arere, samba, Triplochiton scleroxcylon.
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Obedible
O*be"di*ble (?), a. Obedient. [Obs.] Bp. Hall.
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Obedience
O*be"di*ence (?), n. [F. obédience, L. obedientia, oboedientia. See Obedient, and cf. Obeisance.] 1. The act of obeying, or the state of being obedient; compliance with that which is required by authority; subjection to rightful restraint or control.
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Government must compel the obedience of individuals. Ames.
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2. Words or actions denoting submission to authority; dutifulness. Shak.
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3. (Eccl.) (a) A following; a body of adherents; as, the Roman Catholic obedience, or the whole body of persons who submit to the authority of the pope. (b) A cell (or offshoot of a larger monastery) governed by a prior. (c) One of the three monastic vows. Shipley. (d) The written precept of a superior in a religious order or congregation to a subject.
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Canonical obedience. See under Canonical. -- Passive obedience. See under Passive.
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Obedienciary
O*be`di*en"ci*a*ry (?), n. One yielding obedience. [Obs.] Foxe.
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Obedient
O*be"di*ent (?), a. [OF. obedient, L. obediens, oboediens, -entis. p. pr. of obedire, oboedire, to obey. See Obey.] Subject in will or act to authority; willing to obey; submissive to restraint, control, or command.
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And floating straight, obedient to the stream. Shak.
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The chief his orders gives; the obedient band,
With due observance, wait the chief's command.
Pope.
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Syn. -- Dutiful; respectful; compliant; submissive.
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Obediential
O*be`di*en"tial (?), a. [Cf. F. obédientiel.] According to the rule of obedience. [R.]
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An obediental subjection to the Lord of Nature. Sir M. Hale.
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Obediently
O*be"di*ent*ly (?), adv. In an obedient manner; with obedience.
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Obeisance
O*bei"sance (?), n. [F. obéissance obedience, fr. obéissant. See Obey, and cf. Obedience, Abaisance.] 1. Obedience. [Obs.] Chaucer.
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2. Deference or homage, or an expression of deference or respect; a bow; a curtsy.
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Bathsheba bowed and did obeisance unto the king. 1 Kings i. 16.
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Obeisancy
O*bei"san*cy (?), n. See Obeisance. [Obs.]
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Obeisant
O*bei"sant (?), a. [F. obéissant, p. pr. of obéir to obey.] Ready to obey; reverent; deferential; also, servilely submissive.
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Obelion
O*be"li*on (?), n. [NL., from Gr. 'obelo`s a spit.] (Anat.) The region of the skull between the two parietal foramina where the closure of the sagittal suture usually begins.
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Obeliscal
Ob`e*lis"cal (?), a. Formed like an obelisk.
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obelisk
ob"e*lisk (&obreve_;b"&ebreve_;*l&ibreve_;sk), n. [L. obeliscus, Gr. 'obeli`skos, dim. of 'obelo`s a spit, a pointed pillar: cf. F. obélisque.] 1. An upright, four-sided pillar, gradually tapering as it rises, and terminating in a pyramid called pyramidion. It is ordinarily monolithic. Egyptian obelisks are commonly covered with hieroglyphic writing from top to bottom.
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2. (Print.) A mark of reference; -- called also dagger [†]. See Dagger, n., 2.
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Obelisk
Ob"e*lisk, v. t. [imp. & p. p. Obelisked (&obreve_;b"&ebreve_;*l&ibreve_;skt); p. pr. & vb. n. Obelisking.] To mark or designate with an obelisk.
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Obelize
Ob"e*lize (&obreve_;b"&ebreve_;*līz), v. t. [imp. & p. p. Obelized (&obreve_;b"&ebreve_;*līzd); p. pr. & vb. n. Obelizing (&obreve_;b"&ebreve_;*lī*z&ibreve_;ng).] [Gr. 'obeli`zein, fr. 'obelo`s. See Obelus.] To designate with an obelus; to mark as doubtful or spirituous. [R.]
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Obelus
Ob"e*lus (&obreve_;b"&ebreve_;*lŭs), n.; pl. Obeli (&obreve_;b"&ebreve_;*lī). [L., fr. Gr. 'obelo`s, prop., a spit.] (Print.) A mark [thus —, or ÷]; -- so called as resembling a needle. In old MSS. or editions of the classics, it marks suspected passages or readings.
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Obequitate
Ob*eq"ui*tate (?), v. i. [L. obequitatus, p. p. of obequitare to ride about.] To ride about. [Obs.] -- Ob*eq`ui*ta"tion (#), n. [Obs.] Cockerman.
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Oberon
Ob"er*on (&obreve_;b"&etilde_;r*&obreve_;n), prop. n. [F., fr. OF. Auberon; prob. of Frankish origin.] (Mediaeval Mythol.) The king of the fairies, and husband of Titania or Queen Mab. Shak.
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Oberration
Ob`er*ra"tion (?), n. [L. oberrate to wander about.] A wandering about. [Obs.] Jonhson.
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Obese
O*bese" (?). a. [L. obesus eaten away, lean; also, that has eaten itself fat, fat, stout, p. p. of obedere to devour; ob (see Ob-) + edere to eat. See Eat.] Excessively corpulent; fat; fleshy.
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Obeseness
O*bese"ness, n. Quality of being obese; obesity.
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obesity
o*bes"i*ty (?), n.[L. obesitas: cf. F. obésité.] The state or quality of being obese; excessive body weight; incumbrance of flesh.
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Obey
O*bey" (?), v. t. [imp. & p. p. Obeyed (?); p. pr. & vb. n. Obeying.] [OE. obeyen, F. obéir, fr. L. obedire, oboedire; ob (see Ob-) + audire to hear. See Audible, and cf. Obeisance.] 1. To give ear to; to execute the commands of; to yield submission to; to comply with the orders of.
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Children, obey your parents in the Lord. Eph. vi. 1.
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Was she the God, that her thou didst obey? Milton.
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2. To submit to the authority of; to be ruled by.
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My will obeyed his will. Chaucer.
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Afric and India shall his power obey. Dryden.
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3. To yield to the impulse, power, or operation of; as, a ship obeys her helm.
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Obey
O*bey", v. i. To give obedience.
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Will he obey when one commands? Tennyson.
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&hand_; By some old writers obey was used, as in the French idiom, with the preposition to.
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His servants ye are, to whom ye obey. Rom. vi. 16.
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He commanded the trumpets to sound: to which the two brave knights obeying, they performed their courses. Sir. P. Sidney.
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Obeyer
O*bey"er (?), n. One who yields obedience. Holland.
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Obeyingly
O*bey"ing*ly, adv. Obediently; submissively.
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Obfirmate
Obfirm
{ Ob*firm" (?), Ob*firm"ate (?), } v. t. [L. obfirmatus, p. p. of obfirmare to make steadfast. See Ob-, and Firm, v. t.] To make firm; to harden in resolution. [Obs.] Bp. Hall. Sheldon.
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Obfirmation
Ob"fir*ma"tion (?), n. [LL. obfirmatio.] Hardness of heart; obduracy. [Obs.] Jer. Taylor.
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Obfuscate
Ob*fus"cate (?), a. [L. obfuscatus, p. p. of obfuscare to darken; ob (see Ob-) + fuscare, fuscatum, to darken, from fuscus dark.] Obfuscated; darkened; obscured. [Obs.] [Written also offuscate.] Sir. T. Elyot.
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Obfuscate
Ob*fus"cate (?), v. t. [imp. & p. p. Obfuscated (?); p. pr. & vb. n. Obfuscating.] 1. To darken; to obscure; to becloud.
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2. Hence: To confuse; to bewilder; to make unclear.
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His head, like a smokejack, the funnel unswept, and the ideas whirling round and round about in it, all obfuscated and darkened over with fuliginous matter. Sterne.
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Clouds of passion which might obfuscate the intellects of meaner females. Sir. W. Scott.
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Obfuscation
Ob`fus*ca"tion (&obreve_;b`fŭs*kā"shŭn), n. [L. obfuscatio.] The act of darkening or bewildering; the state of being darkened.Obfuscation of the cornea.” E. Darwin.
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Obi
O"bi (?), n. [Prob. of African origin.] 1. A species of sorcery, probably of African origin, practiced among the negroes of the West Indies. [Written also obe and obeah.] De Quincey. B. Edwards.
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2. A charm or fetich. [West Indies] B. Edwards.
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Obi
O"bi (ō"b&euptack_;), n. [Jap.] A sash, esp. the long belt-like broad sash of soft material worn by women aound the waist when wearing a traditional kimono, and usually having a large bow at the back.
[Webster 1913 Suppl.]

Over this is bound the large sash (obi) which is the chief article of feminine adornment. B. H. Chamberlain.
[Webster 1913 Suppl.]

Obiism
O"bi*ism (?), n. Belief in, or the practice of, the obi superstitions and rites.
[Webster 1913 Suppl.]

Obimbricate
Ob*im"bri*cate (?), a. [Pref. ob- + imbricate.] (Bot.) Imbricated, with the overlapping ends directed downward.
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Obit
O"bit (?), n. [OF. obit, L. obitus, fr. obire to go against, to go to meet, (sc. mortem) to die; ob (see Ob-) + ire to go. See Issue.] 1. Death; decease; the date of one's death. Wood.
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2. A funeral solemnity or office; obsequies.
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3. A service for the soul of a deceased person on the anniversary of the day of his death.
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The emoluments and advantages from oblations, obits, and other sources, increased in value. Milman.
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4. Same as obituary; -- by shortenting.
[PJC]

Post obit [L. post obitum]. See Post-obit.
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Obiter
Ob"i*ter (&obreve_;b"&ibreve_;*t&etilde_;r), adv. [L., on the way; ob (see Ob-) + iter a going, a walk, way.] In passing; incidentally; by the way.
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obiter dictum
obiter dictum (&obreve_;b"&ibreve_;*t&etilde_;r d&ibreve_;k"tŭm), n.; pl. obiter dicta (&obreve_;b"&ibreve_;*t&etilde_;r d&ibreve_;k"t&adot_;). (Law), An incidental and collateral opinion uttered by a judge. See Dictum, n., 2 (a).
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Obitual
O*bit"u*al (?), a. [L. obitus death. See Obit.] Of or pertaining to obits, or days when obits are celebrated; as, obitual days. Smart.
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Obituarily
O*bit"u*a*ri*ly (?), adv. In the manner of an obituary.
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Obituary
O*bit"u*a*ry (?), a. [See Obit.] Of or pertaining to the death of a person or persons; as, an obituary notice; obituary poetry.
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obituary
o*bit"u*a*ry, n.; pl. Obituaries (#). [Cf. F. obituaire. See Obit.] 1. That which pertains to, or is called forth by, the obit or death of a person; esp., an account of a deceased person.
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2. Especially: A notice of the death of a person, published in a newspaper or other periodical, accompanied by a biographical sketch which may be brief ro extended; as, the funeral director arranged placed an obituary in the local papaer.
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3. pl. The section of a newspaper in which obituaries{2} are printed; as, I saw the notice of his death in the obituaries.
[PJC]

4. (R. C. Ch.) A list of the dead, or a register of anniversary days when service is performed for the dead.
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Object
Ob*ject" (&obreve_;b*j&ebreve_;kt"), v. t. [imp. & p. p. Objected; p. pr. & vb. n. Objecting.] [L. objectus, p. p. of objicere, obicere, to throw or put before, to oppose; ob (see Ob-) + jacere to throw: cf. objecter. See Jet a shooting forth.] 1. To set before or against; to bring into opposition; to oppose. [Obs.]
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Of less account some knight thereto object,
Whose loss so great and harmful can not prove.
Fairfax.
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Some strong impediment or other objecting itself. Hooker.
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Pallas to their eyes
The mist objected, and condensed the skies.
Pope.
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2. To offer in opposition as a criminal charge or by way of accusation or reproach; to adduce as an objection or adverse reason.
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He gave to him to object his heinous crime. Spencer.
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Others object the poverty of the nation. Addison.
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The book . . . giveth liberty to object any crime against such as are to be ordered. Whitgift.
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Object
Ob*ject", v. i. To make opposition in words or argument; to express one's displeasure; -- usually followed by to; as, she objected to his vulgar language. Sir. T. More.
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Object
Ob"ject (&obreve_;b"j&ebreve_;kt), n. [L. objectus. See Object, v. t.] 1. That which is put, or which may be regarded as put, in the way of some of the senses; something visible or tangible and persists for an appreciable time; as, he observed an object in the distance; all the objects in sight; he touched a strange object in the dark.
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2. Anything which is set, or which may be regarded as set, before the mind so as to be apprehended or known; that of which the mind by any of its activities takes cognizance, whether a thing external in space or a conception formed by the mind itself; as, an object of knowledge, wonder, fear, thought, study, etc.
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Object is a term for that about which the knowing subject is conversant; what the schoolmen have styled the “materia circa quam.” Sir. W. Hamilton.
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The object of their bitterest hatred. Macaulay.
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3. That toward which the mind, or any of its activities, is directed; that on which the purpose are fixed as the end of action or effort; that which is sought for; goal; end; aim; motive; final cause.
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Object, beside its proper signification, came to be abusively applied to denote motive, end, final cause . . . . This innovation was probably borrowed from the French. Sir. W. Hamilton.
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Let our object be, our country, our whole country, and nothing but our country. D. Webster.
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4. Sight; show; appearance; aspect. [Obs.] Shak.
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He, advancing close
Up to the lake, past all the rest, arose
In glorious object.
Chapman.
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5. (Gram.) A word, phrase, or clause toward which an action is directed, or is considered to be directed; as, the object of a transitive verb.
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6. (Computers) Any set of data that is or can be manipulated or referenced by a computer program as a single entity; -- the term may be used broadly, to include files, images (such as icons on the screen), or small data structures. More narrowly, anything defined as an object within an object-oriented programming language.
[PJC]

7. (Ontology) Anything which exists and which has attributes; distinguished from attributes, processes, and relations.
[PJC]

Object glass, the lens, or system of lenses, placed at the end of a telescope, microscope, etc., which is toward the object. Its function is to form an image of the object, which is then viewed by the eyepiece. Called also objective or objective lens. See Illust. of Microscope. -- Object lesson, a lesson in which object teaching is made use of. -- Object staff. (Leveling) Same as Leveling staff. -- Object teaching, a method of instruction, in which illustrative objects are employed, each new word or idea being accompanied by a representation of that which it signifies; -- used especially in the kindergarten, for young children.
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Object
Ob*ject" (?), a. [L. objectus, p. p.] Opposed; presented in opposition; also, exposed. [Obs.]
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Objectable
Ob*ject"a*ble (?), a. Such as can be presented in opposition; that may be put forward as an objection. [R.]
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object program
object file
ob"ject file, ob"ject program (?), n. (Computers) A computer program which has been translated into machine language by a compiler and assembler, but not yet linked into an executable program; sometimes called an obj file, because its file name typically has the extension “obj” .
[PJC]

objectification
objectification n. representing as an object.
[WordNet 1.5]

Objectify
Ob*jec"ti*fy (?), v. t. [Object + -fy.] To cause to become an object; to cause to assume the character of an object; to represent or consider as an object; to render objective. J. D. Morell.
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Objection
Ob*jec"tion (?), n. [L. objectio: cf. F. objection.] 1. The act of objecting; as, to prevent agreement, or action, by objection. Johnson.
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2. That which is, or may be, presented in opposition; an adverse reason or argument; a reason for objecting; obstacle; impediment; as, I have no objection to going; unreasonable objections.Objections against every truth.” Tyndale.
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3. Cause of trouble; sorrow. [Obs. or R.]
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He remembers the objection that lies in his bosom, and he sighs deeply. Jer. Taylor.
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Syn. -- Exception; difficulty; doubt; scruple.
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Objectionable
Ob*jec"tion*a*ble (?), a. Liable to objection; likely to be objected to or disapproved of; offensive; as, objectionable words. -- Ob*jec"tion*a*bly, adv.
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Objectist
Ob"ject*ist (?), n. One who adheres to, or is skilled in, the objective philosophy. Ed. Rev.
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Objectivate
Ob*jec"ti*vate (?), v. t. To objectify.
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Objectivation
Ob*jec`ti*va"tion (?), n. Converting into an object.
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Objective
Ob*jec"tive (&obreve_;b*j&ebreve_;k"t&ibreve_;v), a. [Cf. F. objectif.] 1. Of or pertaining to an object.
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2. (Metaph.) Of or pertaining to an object; contained in, or having the nature or position of, an object; outward; external; extrinsic; -- an epithet applied to whatever is exterior to the mind, or which is simply an object of thought or feeling, as opposed to being related to thoughts of feelings, and opposed to subjective.
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In the Middle Ages, subject meant substance, and has this sense in Descartes and Spinoza: sometimes, also, in Reid. Subjective is used by William of Occam to denote that which exists independent of mind; objective, what is formed by the mind. This shows what is meant by realitas objectiva in Descartes. Kant and Fichte have inverted the meanings. Subject, with them, is the mind which knows; object, that which is known; subjective, the varying conditions of the knowing mind; objective, that which is in the constant nature of the thing known. Trendelenburg.
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Objective has come to mean that which has independent existence or authority, apart from our experience or thought. Thus, moral law is said to have objective authority, that is, authority belonging to itself, and not drawn from anything in our nature. Calderwood (Fleming's Vocabulary).
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3. Hence: Unbiased; unprejudiced; fair; uninfluenced by personal feelings or personal interests; considering only the facts of a situation unrelated to the observer; -- of judgments, opinions, evaluations, conclusions, reasoning processes.
[PJC]

Objective means that which belongs to, or proceeds from, the object known, and not from the subject knowing, and thus denotes what is real, in opposition to that which is ideal -- what exists in nature, in contrast to what exists merely in the thought of the individual. Sir. W. Hamilton.
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4. (Gram.) Pertaining to, or designating, the case which follows a transitive verb or a preposition, being that case in which the direct object of the verb is placed. See Accusative, n.
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&hand_; The objective case is frequently used without a governing word, esp. in designations of time or space, where a preposition, as at, in, on, etc., may be supplied.
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My troublous dream [on] this night doth make me sad. Shak.
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To write of victories [in or for] next year. Hudibras.
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Objective line (Perspective), a line drawn on the geometrical plane which is represented or sought to be represented. -- Objective plane (Perspective), any plane in the horizontal plane that is represented. -- Objective point, the point or result to which the operations of an army are directed. By extension, the point or purpose to which anything, as a journey or an argument, is directed.
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Syn. -- Objective, Subjective. Objective is applied to things exterior to the mind, and objects of its attention; subjective, to the operations of the mind itself. Hence, an objective motive is some outward thing awakening desire; a subjective motive is some internal feeling or propensity. Objective views are those governed by outward things; subjective views are produced or modified by internal feeling. Sir Walter Scott's poetry is chiefly objective; that of Wordsworth is eminently subjective.
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In the philosophy of mind, subjective denotes what is to be referred to the thinking subject, the ego; objective what belongs to the object of thought, the non-ego. Sir. W. Hamilton
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Objective
Ob*jec"tive, n. 1. (Gram.) The objective case.
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2. An object glass; called also objective lens. See under Object, n.
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3. Same as Objective point, under Objective, a.
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objective lens
ob*jec"tive lens, n. An object glass. See under Object, n.
[PJC]

Objectively
Ob*jec"tive*ly, adv. In the manner or state of an object; as, a determinate idea objectively in the mind.
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Objectiveness
Ob*jec"tive*ness, n. Objectivity.
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Is there such a motion or objectiveness of external bodies, which produceth light? Sir M. Hale
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Objectivity
Ob`jec*tiv"i*ty (?), n. [Cf. F. objectivité.] The state, quality, or relation of being objective; character of the object or of the objective.
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The calm, the cheerfulness, the disinterested objectivity have disappeared [in the life of the Greeks]. M. Arnold.
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Objectize
Ob"ject*ize (?), v. t. To make an object of; to regard as an object; to place in the position of an object.
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In the latter, as objectized by the former, arise the emotions and affections. Coleridge.
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Objectless
Ob"ject*less, a. Having no object; purposeless.
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Objector
Ob*ject"or (?), n. [L., an accuser.] One who objects; one who offers objections to a proposition or measure.
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object-oriented
ob"ject-or"i*ent*ed (?), a. (Computers) Using data structures called objects, which encapsulate data and typically are accessed by passing messages, which in turn may trigger internal procedures within the object which are invisible outside the object.
[PJC]

Objibways
Ob*jib"ways (?), prop. n. pl. See Chippeways.
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Objicient
Ob*jic"i*ent (?), n. [L. objiciens, p. pr. of objicere to object.] One who makes objection; an objector. [R.] Cardinal Wiseman.
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Objuration
Ob`ju*ra"tion (?), n. [L. objurare to bind by oath; ob (see Ob-) + jurare to swear, fr. jus right.] A binding by oath. [R.] Abp. Bramhall.
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Objurgate
Ob*jur"gate (?), v. t. [imp. & p. p. Objurgated (?); p. pr. & vb. n. Objurgating.] [L. objurgatus, p. p. of objurgare to chide; ob (see Ob-) + jurgare to quarrel, scold, fr. jus right, court. See Jury.] To chide; to reprove.
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Objurgation
Ob`jur*ga"tion (?), n. [L. objurgatio: cf. F. objurgation.] The act of objurgating; reproof.
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While the good lady was bestowing this objurgation on Mr. Ben Allen. Dickens.
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With a strong objurgation of the elbow in his ribs. Landor.
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Objurgatory
Ob*jur"ga*to*ry (?), a. [L. objurgatorius.] Designed to objurgate or chide; containing or expressing reproof; culpatory. Bancroft.
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The objurgatory question of the Pharisees. Paley.
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Oblanceolate
Ob*lan"ce*o*late (?), a. [Pref. ob- + lanceolate.] Lanceolate in the reversed order, that is, narrowing toward the point of attachment more than toward the apex.
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Oblate
Ob*late" (?), a. [L. oblatus, used as p. p. of offerre to bring forward, offer, dedicate; ob (see Ob-) + latus borne, for tlatus. See Tolerate.]
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1. (Geom.) Flattened or depressed at the poles; as, the earth is an oblate spheroid.
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2. Offered up; devoted; consecrated; dedicated; -- used chiefly or only in the titles of Roman Catholic orders. See Oblate, n.
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Oblate ellipsoid or Oblate spheroid (Geom.), a solid generated by the revolution of an ellipse about its minor axis; an oblatum. Contrasted with prolate spheroid. See Ellipsoid of revolution, under Ellipsoid.
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Oblate
Ob*late", n. [From Oblate, a.] (R. C. Ch.) (a) One of an association of priests or religious women who have offered themselves to the service of the church. There are three such associations of priests, and one of women, called oblates. (b) One of the Oblati.
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Oblateness
Ob*late"ness, n. The quality or state of being oblate.
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Oblati
Ob*la"ti (?), n. pl. [LL., fr. L. oblatus. See Oblate.] (R.C.Ch.) (a) Children dedicated in their early years to the monastic state. (b) A class of persons, especially in the Middle Ages, who offered themselves and their property to a monastery. Addis & Arnold.
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Oblation
Ob*la"tion (?), n. [L. oblatio: cf. F. oblation. See Oblate.] 1. The act of offering, or of making an offering. Locke.
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2. Anything offered or presented in worship or sacred service; an offering; a sacrifice.
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A peculiar . . . oblation given to God. Jer. Taylor.
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A pin was the usual oblation. Sir. W. Scott.
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3. A gift or contribution made to a church, as for the expenses of the eucharist, or for the support of the clergy and the poor.
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Oblationer
Ob*la"tion*er (?), n. One who makes an offering as an act worship or reverence. Dr. H. More.
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Oblatrate
Ob*la"trate (?), v. i. [L. oblatratus, p. p. of oblatrare to bark against.] To bark or snarl, as a dog. [Obs.]
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Oblatration
Ob`la*tra"tion (?), n. The act of oblatrating; a barking or snarling. Bp. Hall.
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Oblatum
Ob*la"tum (?), n.; pl. Oblata (#). [NL. See Oblate.] (Geom.) An oblate spheroid; a figure described by the revolution of an ellipse about its minor axis. Cf. Oblongum.
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Oblectate
Ob*lec"tate (?), v. t. [L. oblectatus, p. p. of oblectare.] To delight; to please greatly. [Obs.]
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Oblectation
Ob"lec*ta"tion (?), n. [L. oblectatio.] The act of pleasing highly; the state of being greatly pleased; delight. [R.] Feltham.
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Obligable
Ob"li*ga*ble (?), a. Acknowledging, or complying with, obligation; trustworthy. [R.]
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The main difference between people seems to be, that one man can come under obligations on which you can rely, -- is obligable; and another is not. Emerson.
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Obligate
Ob"li*gate (?), v. t. [imp. & p. p. Obligated (?); p. pr. & vb. n. Obligating.] [L. obligatus, p. p. of obligare. See Oblige.] 1. To bring or place under obligation, moral or legal; to hold by a constraining motive.Obligated by a sense of duty.” Proudfit.
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That's your true plan -- to obligate
The present ministers of state.
Churchill.
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2. To bind or firmly hold to an act; to compel; to constrain; to bind to any act of duty or courtesy by a formal pledge.
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That they may not incline or be obligated to any vile or lowly occupations. Landor.
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obligated
obligated adj. 1. under a moral obligation to someone.
Syn. -- beholden(predicate).
[WordNet 1.5]

2. under a legal obligation to someone.
Syn. -- indebted.
[WordNet 1.5]

3. owing gratitude or recognition to another for help or favors etc. Opposite of unobligated. [Narrower terms: supposed(predicate), required ]
Syn. -- indebted.
[WordNet 1.5]

Obligation
Ob"li*ga"tion (?), n. [F. obligation. L. obligatio. See Oblige.] 1. The act of obligating.
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2. That which obligates or constrains; the binding power of a promise, contract, oath, or vow, or of law; that which constitutes legal or moral duty.
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A tender conscience is a stronger obligation than a proson. Fuller.
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3. Any act by which a person becomes bound to do something to or for another, or to forbear something; external duties imposed by law, promise, or contract, by the relations of society, or by courtesy, kindness, etc.
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Every man has obligations which belong to his station. Duties extend beyond obligation, and direct the affections, desires, and intentions, as well as the actions. Whewell.
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4. The state of being obligated or bound; the state of being indebted for an act of favor or kindness; -- often used with under to indicate being in that state; as, to place others under obligations to one.
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5. (Law) A bond with a condition annexed, and a penalty for nonfulfillment. In a larger sense, it is an acknowledgment of a duty to pay a certain sum or do a certain things.
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Days of obligation. See under Day. -- under obligation, under an obligation. in a state of obligation{4}.
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obligational
obligational adj. relating or constituting or qualified to create a legal or financial obligation; as, obligational authority.
[WordNet 1.5]

Obligato
Ob"li*ga"to (?), a. [It.] See Obbligato.
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Obligatorily
Ob"li*ga*to*ri*ly (?), adv. In an obligatory manner; by reason of obligation. Foxe.
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Obligatoriness
Ob"li*ga*to*ri*ness, n. The quality or state of being obligatory.
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Obligatory
Ob"li*ga*to*ry (?), a. [L. obligatorius: cf. F. obligatoire.] Binding in law or conscience; imposing duty or obligation; requiring performance or forbearance of some act; -- often followed by on or upon; as, obedience is obligatory on a soldier.
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As long as the law is obligatory, so long our obedience is due. Jer. Taylor.
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Oblige
O*blige" (&ouptack_;*blīj"; 277), v. t. [imp. & p. p. Obliged (&ouptack_;*blījd"); p. pr. & vb. n. Obliging (&ouptack_;*blī"j&ibreve_;ng).] [OF. obligier, F. obliger, L. obligare; ob (see Ob-) + ligare to bind. See Ligament, and cf. Obligate.] 1. To attach, as by a bond. [Obs.]
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He had obliged all the senators and magistrates firmly to himself. Bacon.
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2. To constrain by physical, moral, or legal force; to put under obligation to do or forbear something.
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The obliging power of the law is neither founded in, nor to be measured by, the rewards and punishments annexed to it. South.
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Religion obliges men to the practice of those virtues which conduce to the preservation of our health. Tillotson.
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3. To bind by some favor rendered; to place under a debt; hence, to do a favor to; to please; to gratify; to accommodate.
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Thus man, by his own strength, to heaven would soar,
And would not be obliged to God for more.
Dryden.
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The gates before it are brass, and the whole much obliged to Pope Urban VIII. Evelyn.
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I shall be more obliged to you than I can express. Mrs. E. Montagu.
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obligee
ob`li*gee" (&obreve_;b`l&ibreve_;*jē"), n. [F. obligé, p. p. of obliger. See Oblige.] The person to whom another is bound, or the person to whom a bond is given. Blackstone.
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obligement
o*blige"ment (&ouptack_;*blīj"m&eitalic_;nt), n. Obligation. [R.]
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I will not resist, therefore, whatever it is, either of divine or human obligement, that you lay upon me. Milton.
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obliger
o*bli"ger (&ouptack_;*blī"j&etilde_;r), n. One who, or that which, obliges. Sir H. Wotton.
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obliging
o*bli"ging (&ouptack_;*blī"j&ibreve_;ng), a. Putting under obligation; disposed to oblige or do favors; hence, helpful; civil; kind.
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Mons. Strozzi has many curiosities, and is very obliging to a stranger who desires the sight of them. Addison.
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Syn. -- Civil; complaisant; courteous; kind, -- Obliging, Kind, Complaisant. One is kind who desires to see others happy; one is complaisant who endeavors to make them so in social intercourse by attentions calculated to please; one who is obliging performs some actual service, or has the disposition to do so.
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-- O*bli"ging*ly. adv. -- O*bli"ging*ness, n.
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Obligor
Ob`li*gor" (?), n. The person who binds himself, or gives his bond to another. Blackstone.
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Obliquation
Ob`li*qua"tion (?), n. [L. obliquatio, fr. obliquare to turn obliquely. See Oblique.] 1. The act of becoming oblique; a turning to one side; obliquity; as, the obliquation of the eyes. [R.] Sir T. Browne.
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2. Deviation from moral rectitude. [R.]
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Oblique
Ob*lique" (?), a. [F., fr. L. obliquus; ob (see Ob-) + liquis oblique; cf. licinus bent upward, Gr. le`chrios slanting.] [Written also oblike.]
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1. Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined.
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It has a direction oblique to that of the former motion. Cheyne.
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2. Not straightforward; indirect; obscure; hence, disingenuous; underhand; perverse; sinister.
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The love we bear our friends . . .
Hath in it certain oblique ends.
Drayton.
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This mode of oblique research, when a more direct one is denied, we find to be the only one in our power. De Quincey.
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Then would be closed the restless, oblique eye.
That looks for evil, like a treacherous spy.
Wordworth.
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3. Not direct in descent; not following the line of father and son; collateral.
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His natural affection in a direct line was strong, in an oblique but weak. Baker.
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Oblique angle, Oblique ascension, etc. See under Angle, Ascension, etc. -- Oblique arch (Arch.), an arch whose jambs are not at right angles with the face, and whose intrados is in consequence askew. -- Oblique bridge, a skew bridge. See under Bridge, n. -- Oblique case (Gram.), any case except the nominative. See Case, n. -- Oblique circle (Projection), a circle whose plane is oblique to the axis of the primitive plane. -- Oblique fire (Mil.), a fire the direction of which is not perpendicular to the line fired at. -- Oblique flank (Fort.), that part of the curtain whence the fire of the opposite bastion may be discovered. Wilhelm. -- Oblique leaf. (Bot.) (a) A leaf twisted or inclined from the normal position. (b) A leaf having one half different from the other. -- Oblique line (Geom.), a line that, meeting or tending to meet another, makes oblique angles with it. -- Oblique motion (Mus.), a kind of motion or progression in which one part ascends or descends, while the other prolongs or repeats the same tone, as in the accompanying example. -- Oblique muscle (Anat.), a muscle acting in a direction oblique to the mesial plane of the body, or to the associated muscles; -- applied especially to two muscles of the eyeball. -- Oblique narration. See Oblique speech. -- Oblique planes (Dialing), planes which decline from the zenith, or incline toward the horizon. -- Oblique sailing (Naut.), the movement of a ship when she sails upon some rhumb between the four cardinal points, making an oblique angle with the meridian. -- Oblique speech (Rhet.), speech which is quoted indirectly, or in a different person from that employed by the original speaker. -- Oblique sphere (Astron. & Geog.), the celestial or terrestrial sphere when its axis is oblique to the horizon of the place; or as it appears to an observer at any point on the earth except the poles and the equator. -- Oblique step (Mil.), a step in marching, by which the soldier, while advancing, gradually takes ground to the right or left at an angle of about 25°. It is not now practiced. Wilhelm. -- Oblique system of coordinates (Anal. Geom.), a system in which the coordinate axes are oblique to each other.
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Oblique
Ob*lique", n. (Geom.) An oblique line.
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Oblique
Ob*lique", v. i. [imp. & p. p. Obliqued (?); p. pr. & vb. n. Obliquing.] 1. To deviate from a perpendicular line; to move in an oblique direction.
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Projecting his person towards it in a line which obliqued from the bottom of his spine. Sir. W. Scott.
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2. (Mil.) To march in a direction oblique to the line of the column or platoon; -- formerly accomplished by oblique steps, now by direct steps, the men half-facing either to the right or left.
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Oblique-angled
Ob*lique"-an`gled (?), a. Having oblique angles; as, an oblique-angled triangle.
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Obliquely
Ob*lique"ly, adv. In an oblique manner; not directly; indirectly. “Truth obliquely leveled.” Bp. Fell.
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Declining from the noon of day,
The sun obliquely shoots his burning ray.
Pope
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His discourse tends obliquely to the detracting from others. Addison.
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Obliqueness
Ob*lique"ness, n. Quality or state of being oblique.
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Obliquity
Ob*liq"ui*ty, n.; pl. Obliquities (#). [L. obliquitas: cf. F. obliquité.] 1. The condition of being oblique; deviation from a right line; deviation from parallelism or perpendicularity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator.
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2. Deviation from ordinary rules; irregularity; deviation from moral rectitude.
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To disobey [God] . . . imports a moral obliquity. South.
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Oblite
Ob"lite (?), a. [L. oblitus, p. p. pf oblinere to besmear.] Indistinct; slurred over. [Obs.] “Obscure and oblite mention.” Fuller.
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Obliterate
Ob*lit"er*ate (?), v. t. [imp. & p. p. Obliterated (?); p. pr. & vb. n. Obliterating.] [L. obliteratus, p. p. of obliterare to obliterate; ob (see Ob-) + litera, littera, letter. See Letter.] 1. To erase or blot out; to efface; to render undecipherable, as a writing.
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2. To wear out; to remove or destroy utterly by any means; to render imperceptible; as, to obliterate ideas; to obliterate the monuments of antiquity.
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The harsh and bitter feelings of this or that experience are slowly obliterated. W. Black.
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Obliterate
Ob*lit"er*ate (?), a. (Zool.) Scarcely distinct; -- applied to the markings of insects.
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obliterated
obliterated adj. 1. destroyed so thoroughly as to be unrecognizable or imperceptible.
Syn. -- wiped out, obliterate.
[WordNet 1.5 +PJC]

2. made illegible or imperceptible by erasing or abrading away; -- of writing or surface designs on objects.
Syn. -- blotted out, obliterated.
[PJC]

obliterating
obliterating adj. making undecipherable or imperceptible; as, obliterating mists.
Syn. -- obscurant.
[WordNet 1.5]

Obliteration
Ob*lit`er*a"tion (?), n. [L. obliteratio: cf. F. oblitération.] The act of obliterating, or the state of being obliterated; extinction. Sir. M. Hale.
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Obliterative
Ob*lit"er*a*tive (?), a. Tending or serving to obliterate.
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Oblivion
Ob*liv"i*on (?), n. [L. oblivio, akin to oblivisci to forget: cf. OF. oblivion.] 1. The act of forgetting, or the state of being forgotten; cessation of remembrance; forgetfulness.
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Second childishness and mere oblivion. Shak.
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Among our crimes oblivion may be set. Dryden
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The origin of our city will be buried in eternal oblivion. W. Irving.
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2. Official ignoring of offenses; amnesty, or general pardon; as, an act of oblivion. Sir J. Davies.
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Syn. -- See Forgetfulness.
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Oblivious
Ob*liv"i*ous (?), a. [L. obliviosus: cf. F. oblivieux.]
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1. Promoting oblivion; causing forgetfulness. “The oblivious pool.” Milton.
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She lay in deep, oblivious slumber. Longfellow.
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2. Evincing oblivion; forgetful.
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Through are both weak in body and oblivious. Latimer.
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-- Obliv"i*ous*ly, adv. -- Ob*liv"i*ous*ness, n. Foxe.
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obliviousness
ob*liv"i*ous*ness n. total forgetfulness.
Syn. -- oblivion.
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Oblocutor
Ob*loc"u*tor (?), n. [L. oblocutor, obloquutor, fr. obloqui, oblocutus, to speak against; ob (see Ob-) + loqui to speak. See Loquacious.] A disputer; a gainsayer. [Obs.] Bale.
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Oblong
Ob"long (?), a. [L. oblongus; ob (see Ob-) + longus long: cf. F. oblong.] Having greater length than breadth, esp. when rectangular.
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Oblong
Ob"long, n. A rectangular figure longer than it is broad; hence, any figure longer than it is broad.
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The best figure of a garden I esteem an oblong upon a descent. Sir W. Temple.
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Oblongata
Ob`lon*ga"ta (?), n. [NL.] (Anat.) The medulla oblongata. B. G. Wilder.
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Oblongatal
Ob"lon*ga"tal (?), a. Of or pertaining to the medulla oblongata; medullar.
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Oblongish
Ob"long*ish (?), a. Somewhat oblong.
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Oblongly
Ob"long*ly, adv. In an oblong form.
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Oblongness
Ob"long*ness, n. State or quality of being oblong.
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Oblong-ovate
Ob"long-o"vate (?), a. Between oblong and ovate, but inclined to the latter.
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Oblongum
Ob*lon"gum (?), n.; pl. Oblonga (#). [NL. See Oblong.] (Geom.) A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis. Cf. Oblatum, and see Ellipsoid of revolution, under Ellipsoid.
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Obloquious
Ob*lo"qui*ous (?), a. Containing obloquy; reproachful [R.] Naunton.
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Obloquy
Ob"lo*quy (&obreve_;b"l&ouptack_;*kw&ybreve_;), n. [L. obloquium, fr. obloqui. See Oblocutor.] 1. Censorious speech; defamatory language; language that casts contempt on men or their actions; blame; reprehension.
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Shall names that made your city the glory of the earth be mentioned with obloquy and detraction? Addison.
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2. Cause of reproach; disgrace. [Obs.] Shak.
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Syn. -- Reproach; odium; censure; contumely; gainsaying; reviling; calumny; slander; detraction.
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Obluctation
Ob`luc*ta"tion (?), n. [L. oblictutio, fr. obluctari to struggle against.] A struggle against; resistance; opposition. [Obs.] Fotherby.
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Obmutescence
Ob`mu*tes"cence (&obreve_;b`m&uuptack_;*t&ebreve_;s"s&eitalic_;ns), n. [L. obmutescens, p. pr of obmutescere to become dumb; ob (see Ob-) + mutescere to grow dumb, fr. mutus dumb.] 1. A becoming dumb; loss of speech. Sir T. Browne.
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2. A keeping silent or mute. Paley.
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Obnoxious
Ob*nox"ious (&obreve_;b*n&obreve_;k"shŭs), a. [L. obnoxius; ob (see Ob-) + noxius hurtful. See Noxious.] 1. Subject; liable; exposed; answerable; amenable; -- with to.
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The writings of lawyers, which are tied obnoxious to their particular laws. Bacon.
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Esteeming it more honorable to live on the public than to be obnoxious to any private purse. Milton.
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Obnoxious, first or last,
To basest things
Milton.
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2. Liable to censure; exposed to punishment; reprehensible; blameworthy. “The contrived and interested schemes of . . . obnoxious authors.” Bp. Fell.
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All are obnoxious, and this faulty land,
Like fainting Hester, does before you stand
Watching your scepter.
Waller.
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3. Very offensive; odious; hateful; as, an obnoxious statesman; a minister obnoxious to the Whigs. Burke.
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-- Ob*nox"ious*ly, adv. -- Ob*nox"ious*ness, n. South.
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Obnubilate
Ob*nu"bi*late (?), v. t. [L. obnubilatus, p. p. of obnubilare to obscure. See Ob-, and Nubilate.] To cloud; to obscure. [Obs.] Burton. -- Ob*nu"bi*la"tion (#), n. [Obs.] Beddoes.
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Oboe
O"boe (?), n. [It., fr. F. hautbois. See Hautboy.] (Mus.) One of the higher wind instruments in the modern orchestra, yet of great antiquity, having a penetrating pastoral quality of tone, somewhat like the clarinet in form, but more slender, and sounded by means of a double reed; a hautboy.
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Oboe d'amore [It., lit., oboe of love], and Oboe di caccia [It., lit., oboe of the chase], are names of obsolete modifications of the oboe, often found in the scores of Bach and Handel.
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Oboist
O"bo*ist (?), n. A performer on the oboe.
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Obolary
Ob"o*la*ry (?), a. [See Obolus.] Possessing only small coins; impoverished. [R.] Lamb.
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Obole
Ob"ole (?), n. [Cf. F. obole. See Obolus.] (Old Pharm.) A weight of twelve grains; or, according to some, of ten grains, or half a scruple. [Written also obol.]
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Obolize
Ob"o*lize (?), v. t. See Obelize.
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Obolo
Ob"o*lo (?), n. [Cf. Obolus.] A copper coin, used in the Ionian Islands, about one cent in value.
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Obolus
Ob"o*lus (?), n.;pl. Oboli (#). [L., fr. Gr. (&unr_;)] (Gr.Antiq.) (a) A small silver coin of Athens, the sixth part of a drachma, about three cents in value. (b) An ancient weight, the sixth part of a drachm.
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Obomegoid
Ob`o*me"goid (?), a. [Pref. ob- + omegoid.] (Zool.) Obversely omegoid.
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Oboval
Ob*o"val (?), a. [Pref. ob- + oval.] Obovate.
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Obovate
Ob*o"vate (?). a. [Pref. ob- + ovate.] (Bot.) Inversely ovate; ovate with the narrow end downward; as, an obovate leaf.
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Obreption
Ob*rep"tion (?), n. [L. obreptio, fr. obrepere, obreptum, to creep up to; ob (see Ob-) + repere to creep.] 1. The act of creeping upon with secrecy or by surprise. [Obs.] Cudworth.
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2. (Scots Law) The obtaining gifts of escheat by fraud or surprise. Bell.
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Obreptitious
Ob`rep*ti"tious (?), a. [L. obreptitus. See Obreption.] Done or obtained by surprise; with secrecy, or by concealment of the truth. [R.] Cotgrave.
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Obrogate
Ob"ro*gate (?), v. t. [L. obrogatus, p. p. of obrogare to obrogate.] To annul indirectly by enacting a new and contrary law, instead of by expressly abrogating or repealing the old one. [Obs.] Bailey.
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Obrok
Ob"rok (?), n. [Russ. obrok'.] (a) A rent. (b) A poll tax paid by peasants absent from their lord's estate. [Russia] Brande & C.
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Obscene
Ob*scene" (?), a. [L. obscenus, obscaenus, obscoenus, ill looking, filthy, obscene: cf. F. obscéne.]
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1. Offensive to chastity or modesty; expressing or presenting to the mind or view something which delicacy, purity, and decency forbid to be exposed; impure; as, obscene language; obscene pictures.
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Words that were once chaste, by frequent use grew obscene and uncleanly. I. Watts.
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2. Foul; fifthy; disgusting.
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A girdle foul with grease binds his obscene attire. Dryden (Aeneid, vi. 417).
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3. Inauspicious; ill-omened. [R.] [A Latinism]
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At the cheerful light,
The groaning ghosts and birds obscene take flight.
Dryden.
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Syn. -- Impure; immodest; indecent; unchaste; lewd.
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-- Ob*scene"ly, adv. -- Ob*scene"ness, n.
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Obscenity
Ob*scen"i*ty (?), n.; pl. Obscenities (#). [L. obscentias: cf. F. obscénité.] That quality in words or things which presents what is offensive to chastity or purity of mind; obscene or impure lanquage or acts; moral impurity; lewdness; obsceneness; as, the obscenity of a speech, or a picture.
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Mr. Cowley asserts plainly, that obscenity has no place in wit. Dryden.
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No pardon vile obscenity should find. Pope.
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Obscurant
Ob*scur"ant (?), n. [L. obscurans, p. pr. of obscurare to obscure.] One who obscures; one who prevents enlightenment or hinders the progress of knowledge and wisdom. Coleridge.
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Obscurantism
Ob*scur"ant*ism (?), n. The system or the principles of the obscurants. C. Kingsley.
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Obscurantist
Ob*scur"ant*ist, n. Same as Obscurant. Ed. Rev.
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Obscuration
Ob`scu*ra"tion (?), n. [L. obscurativ: cf. F. obscuration. See Obscure, v. t. ] The act or operation of obscuring; the state of being obscured; as, the obscuration of the moon in an eclipse. Sir J. Herschel.
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Obscure
Ob*scure" (&obreve_;b*skūr"), a. [Compar. Obscurer (&obreve_;b*skūr"&etilde_;r); superl. Obscurest.] [L. obscurus, orig., covered; ob- (see Ob-) + a root probably meaning, to cover; cf. L. scutum shield, Skr. sku to cover: cf. F. obscur. Cf. Sky.]
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1. Covered over, shaded, or darkened; destitute of light; imperfectly illuminated; dusky; dim.
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His lamp shall be put out in obscure darkness. Prov. xx. 20.
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2. Of or pertaining to darkness or night; inconspicuous to the sight; indistinctly seen; hidden; retired; remote from observation; unnoticed.
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The obscure bird
Clamored the livelong night.
Shak.
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The obscure corners of the earth. Sir J. Davies.
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3. Not noticeable; humble; mean. “O base and obscure vulgar.” Shak. “An obscure person.” Atterbury.
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4. Not easily understood; not clear or legible; abstruse or incomprehensible; as, an obscure passage or inscription.
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5. Not clear, full, or distinct; clouded; imperfect; as, an obscure view of remote objects.
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Obscure rays (Opt.), those rays which are not luminous or visible, and which in the spectrum are beyond the limits of the visible portion.
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Syn. -- Dark; dim; darksome; dusky; shadowy; misty; abstruse; intricate; difficult; mysterious; retired; unnoticed; unknown; humble; mean; indistinct.
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Obscure
Ob*scure", v. t. [imp. & p. p. Obscured (&obreve_;b*skūrd"); p. pr. & vb. n. Obscuring.] [L. obscurare, fr. obscurus: cf. OF. obscurer. See Obscure, a.] To render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible, intelligible, legible, glorious, beautiful, or illustrious.
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They are all couched in a pit hard by Herne's oak, with obscured lights. Shak.
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Why, 't is an office of discovery, love,
And I should be obscured.
Shak.
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There is scarce any duty which has been so obscured by the writings of learned men as this. Wake.
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And seest not sin obscures thy godlike frame? Dryden.
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Obscure
Ob*scure" (&obreve_;b*skūr"), v. i. To conceal one's self; to hide; to keep dark. [Obs.]
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How! There's bad news.
I must obscure, and hear it.
Beau. & Fl.
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Obscure
Ob*scure", n. Obscurity. [Obs.] Milton.
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Obscurely
Ob*scure"ly, adv. In an obscure manner. Milton.
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Obscurement
Ob*scure"ment (&obreve_;b*skūr"m&eitalic_;nt), n. The act of obscuring, or the state of being obscured; obscuration. Pomfret.
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Obscureness
Ob*scure"ness, n. Obscurity. Bp. Hall.
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Obscurer
Ob*scur"er (&obreve_;b*skūr"&etilde_;r), n. One who, or that which, obscures.
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obscurity
ob*scu"ri*ty (&obreve_;b*skū"r&ibreve_;*t&ybreve_;), n. [L. obscuritas: cf. F. obscurité.] The quality or state of being obscure.
Syn. -- darkness; privacy; inconspicuousness; unintelligibleness; uncertainty.
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You are not for obscurity designed. Dryden.
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They were now brought forth from obscurity, to be contemplated by artists with admiration and despair. Macaulay.
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Syn. -- Darkness; dimness; gloom. See Darkness.
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obsecrate
ob"se*crate (&obreve_;b"s&euptack_;*krāt), v. t. [imp. & p. p. obsecrated (ocr/b"s&euptack_;*krā`t&ebreve_;d); p. pr. & vb. n. obsecrating.] [L. obsecratus, p. p. of obsecrare, prop., to ask on religious grounds; ob (see Ob-) + sacrare to declare as sacred, from sacer sacred.] To beseech; to supplicate; to implore. [R.]. Cockerman.
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obsecration
ob`se*cra"tion (&obreve_;b`s&euptack_;*krā"shŭn), n. [L. obsecratio: cf. F. obsecration.] 1. The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with “By.” Bp. Stillingfeet. Shipley.
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2. (Rhet.) A figure of speech in which the orator implores the assistance of God or man.
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Obsecratory
Ob"se*cra*to*ry (?), a. Expressing, or used in, entreaty; supplicatory. [R.] Bp. Hall.
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Obsequent
Ob"se*quent (?), a. [L. obsequens, p. pr. of obsequi; ob (see Ob-) + sequi. See Sequence.] Obedient; submissive; obsequious. [Obs.] Fotherby.
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Obsequience
Ob*se"qui*ence (?), n. Obsequiousness. [R.]
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Obsequies
Ob"se*quies (?), n. pl. See Obsequy.
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Obsequious
Ob*se"qui*ous (?), a. [L. obsequiosus, fr. obsequium compliance, fr. obsequi, fr. obsequi: cf. F. obséquieux, See Obsequent, and cf. Obsequy.] 1. Promptly obedient, or submissive, to the will of another; compliant; yielding to the desires of another; devoted. [Obs.]
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His servants weeping,
Obsequious to his orders, bear him hither.
Addison.
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2. Servilely or meanly attentive; compliant to excess; cringing; fawning; as, obsequious flatterer, parasite.
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There lies ever in “obsequious” at the present the sense of an observance which is overdone, of an unmanly readiness to fall in with the will of another. Trench.
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3. [See Obsequy.] Of or pertaining to obsequies; funereal. [R.] “To do obsequious sorrow.” Shak.
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Syn. -- Compliant; obedient; servile. See Yielding.
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Obsequiously
Ob*se"qui*ous*ly, adv. 1. In an obsequious manner; compliantly; fawningly. Dryden.
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2. In a manner appropriate to obsequies. [Obs.]
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Whilst I a while obsequiously lament
The untimely fall of virtuous Lancaster.
Shak.
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Obsequiousness
Ob*se"qui*ous*ness, n. The quality or state of being obsequious. South.
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Obsequy
Ob"se*quy (?), n.; pl. Obsequies (#). [L. obsequiae, pl., funeral rites, fr. obsequi: cf. F. obsèques. See Obsequent, and cf. Obsequious.] 1. The last duty or service to a person, rendered after his death; hence, a rite or ceremony pertaining to burial; -- now used only in the plural. Spencer.
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I will . . . fetch him hence, and solemnly attend,
With silent obsequy and funeral train.
Milton
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I will myself
Be the chief mourner at his obsequies.
Dryden.
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The funeral obsequies were decently and privately performed by his family. J. P. Mahaffy.
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2. Obsequiousness. [Obs.] B. Jonson.
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Observable
Ob*serv"a*ble (?), a. [L. observabilis: cf. F. observable.] 1. Capable of being observed; discernible; noticeable. Sir. T. Browne.
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The difference is sufficiently observable. Southey.
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2. Worthy of being observed; important enough to be noted or celebrated; as, an observable anniversary.
[PJC]

3. Noteworthy; remarkable.
[PJC]

-- Ob*serv"a*ble*ness, n. -- Ob*serv"a*bly, adv.
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Observance
Ob*serv"ance (?), n. [F. observance, L. observantia. See Observant.] 1. The act or practice of observing or noticing with attention; a heeding or keeping with care; performance; -- usually with a sense of strictness and fidelity; as, the observance of the Sabbath is general; the strict observance of duties.
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It is a custom
More honored in the breach than the observance.
Shak.
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2. An act, ceremony, or rite, as of worship or respect; especially, a customary act or service of attention; a form; a practice; a rite; a custom.
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At dances
These young folk kept their observances.
Chaucer.
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Use all the observance of civility. Shak.
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Some represent to themselves the whole of religion as consisting in a few easy observances. Rogers.
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O I that wasted time to tend upon her,
To compass her with sweet observances!
Tennyson.
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3. Servile attention; sycophancy. [Obs.]
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Salads and flesh, such as their haste could get,
Served with observance.
Chapman.
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This is not atheism,
But court observance.
Beau. & Fl.
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Syn. -- Observance, Observation. These words are discriminated by the two distinct senses of observe. To observe means (1) to keep strictly; as, to observe a fast day, and hence, observance denotes the keeping or heeding with strictness; (2) to consider attentively, or to remark; and hence, observation denotes either the act of observing, or some remark made as the result thereof. We do not say the observation of Sunday, though the word was formerly so used. The Pharisees were curious in external observances; the astronomers are curious in celestial observations.
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Love rigid honesty,
And strict observance of impartial laws.
Roscommon.
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Observancy
Ob*serv"an*cy (?), n. Observance. [Obs.]
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Observandum
Ob*ser`van"dum (?), n.; pl. Observanda (#). [L.] A thing to be observed. Swift.
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Observant
Ob*serv"ant (?), a. [L. observans, -anits, p. pr. of observare: cf. F. observant. See Observe.] 1. Taking notice; viewing or noticing attentively; watchful; carefully attentive; as, an observant spectator; observant habits.
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Wandering from clime to clime observant stray'd. Pope.
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2. Submissively attentive; obediently watchful; regardful; mindful; obedient (to); -- with of, as, to be observant of rules.
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We are told how observant Alexander was of his master Aristotle. Sir K. Digby.
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Observant
Ob*serv"ant, n. 1. One who observes forms and rules. [Obs.] Hooker.
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2. A sycophantic servant. [Obs.]
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Silly ducking observants,
That stretch their duties nicely.
Shak.
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3. (R. C. Ch.) An Observantine.
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Observantine
Ob`ser*van"tine (?), n. [Fr. observantin.] (R. C. Ch.) One of a branch of the Order of Franciscans, who profess to adhere more strictly than the Conventuals to the intention of the founder, especially as to poverty; -- called also Observants.
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Observantly
Ob*serv"ant*ly, adv. In an observant manner.
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Observation
Ob`ser*va"tion (?), n. [L. observatio: cf. F. observation.] 1. The act or the faculty of observing or taking notice; the act of seeing, or of fixing the mind upon, anything.
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My observation, which very seldom lies. Shak.
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2. The result of an act, or of acts, of observing; view; reflection; conclusion; judgment.
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In matters of human prudence, we shall find the greatest advantage in making wise observations on our conduct. I. Watts.
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3. Hence: An expression of an opinion or judgment upon what one has observed; a remark. “That's a foolish observation.” Shak.
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To observations which ourselves we make
We grow more partial for the observer's sake.
Pope.
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4. Performance of what is prescribed; adherence in practice; observance. [Obs.]
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We are to procure dispensation or leave to omit the observation of it in such circumstances. Jer. Taylor.
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5. (Science) (a) The act of recognizing and noting some fact or occurrence in nature, as an aurora, a corona, or the structure of an animal. (b) Specifically, the act of measuring, with suitable instruments, some magnitude, as the time of an occultation, with a clock; the right ascension of a star, with a transit instrument and clock; the sun's altitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc. (c) The information so acquired; as, to record one's observations carefully.
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&hand_; When a phenomenon is scrutinized as it occurs in nature, the act is termed an observation. When the conditions under which the phenomenon occurs are artificial, or arranged beforehand by the observer, the process is called an experiment. Experiment includes observation.
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To take an observation (Naut.), to ascertain the altitude of a heavenly body, with a view to fixing a vessel's position at sea.
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Syn. -- Observance; notice; attention; remark; comment; note. See Observance.
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Observational
Ob`ser*va"tion*al (?), a. Of or pertaining to observation; consisting of, or containing, observations. Chalmers.
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Observation car
Ob`ser*va"tion car. A railway passenger car made so as to facilitate seeing the scenery en route; a car open, or with glass sides, or with a kind of open balcony at the rear.
[Webster 1913 Suppl.]

Observation deck
Ob`ser*va"tion deck. A room or platform at a high point in a tall building with a broad view of the surrounding area. It is often an outdoor platform, but is sometimes indoors in a room with large windows to accommodate viewing.
[PJC]

Observation post
Ob`ser*va"tion post. (Mil.) a military outpost, usually at a height above the surrounding terrain, at or near the front line of a battle from which an observer may see the enemy's positions and direct artillery fire.
[PJC]

Observative
Ob*serv"a*tive (?), a. Observing; watchful.
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Observator
Ob"ser*va`tor (?), n. [L.] 1. One who observes or takes notice. [Obs.] Sir M. Hale.
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2. One who makes a remark. [Obs.] Dryden.
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Observatory
Ob*serv"a*to*ry (?), n.; pl. Observatories (#). [Cf. F. observatoire.] 1. A place or building for making observations on the heavenly bodies.
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The new observatory in Greenwich Park. Evelyn.
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2. A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena.
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3. A place, as an elevated chamber, from which a view may be observed or commanded.
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4. (Mil.) A lookout on a flank of a battery whence an officer can note the range and effect of the fire; usually referred to as an observation post. Farrow.
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Observe
Ob*serve" (&obreve_;b*z&etilde_;rv"), v. t. [imp. & p. p. Observed (&obreve_;b*z&etilde_;rvd"); p. pr. & vb. n. Observing.] [L. observare, observatum; ob (see Ob-) + servare to save, preserve, keep, heed, observe: cf. F. observer. See Serve.] 1. To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility.
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Ye shall observe the feast of unleavened bread. Ex. xii. 17.
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He wolde no such cursedness observe. Chaucer.
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Must I budge? Must I observe you? Shak.
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With solemn purpose to observe
Immutably his sovereign will.
Milton.
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2. To be on the watch respecting; to pay attention to; to notice with care; to see; to perceive; to notice; to discover; as, to observe an eclipse; to observe the color or fashion of a dress; to observe the movements of an army; to observe an accident.
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3. To express as what has been noticed; to utter as a remark; to say in a casual or incidental way; to remark.
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Observe
Ob*serve", v. i. 1. To take notice; to give attention to what one sees or hears; to attend.
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2. To make a remark; to comment; to make an observation{3}; -- generally with on or upon.
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I have barely quoted . . . without observing upon it. Pope.
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Syn. -- To remark. See Remark.
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observed
observed adj. 1. perceived with the eyes and sometimes with other senses; as, no explanation for the observed phenomena.
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2. Detected by systematic scientific observation; as, variation in the observed flux may depend on a number of factors.
Syn. -- ascertained.
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3. Perceived directly with the eyes; observed at first hand.
Syn. -- seen, witnessed.
[WordNet 1.5]

Observer
Ob*serv"er (?), n. 1. One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.
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The observed of all observers. Shak.
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Careful observers may foretell the hour,
By sure prognostic, when to dread a shower.
Swift.
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2. One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice. “Diligent observers of old customs.” Spenser.
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These . . . hearkened unto observers of times. Deut. xviii. 14.
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3. One who fulfills or performs; as, an observer of his promises.
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4. A sycophantic follower. [Obs.] Beau. & Fl.
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Observership
Ob*serv"er*ship (?), n. The office or work of an observer.
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Observing
Ob*serv"ing, a. Giving particular attention; habitually attentive to what passes; observant{1}; as, an observing person; an observing mind. -- Ob*serv"ing*ly, adv.
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obsess
ob*sess" (?), v. t. [L. obsessus, p. p. of obsidere to besiege; ob (see Ob-) + sedere to sit.] 1. To besiege; to beset. [archaic] Sir T. Elyot.
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2. To excessively preoccupy the thoughts or feelings of; to haunt the mind persistently.
[PJC]

obsess
ob*sess" (?), v. i. To be excessively or persistently preoccupied with something; -- usually used with on or over; as, to obsess over an imagined insult.
[PJC]

At all ages children are driven to figure out what it takes to succeed among their peers and to give these strategies precedence over anything their parents foist on them. Weary parents know they are no match for a child's peers, and rightly obsess over the best neighborhood in which to bring their children up. Steven Pinker (How the Mind Works, p. 449-450 [1997]).
[PJC]

obsessed
obsessed adj. 1. having or showing excessive or compulsive concern; -- used with with.
Syn. -- haunted, preoccupied, taken up(predicate).
[WordNet 1.5]

2. influenced or controlled by a powerful force such as a strong emotion.
Syn. -- possessed(predicate).
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Obsession
Ob*ses"sion (?), n. [L. obsessio: cf. F. obsession.] 1. The act of besieging. [archaic] Johnson.
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2. The state of being besieged; -- used specifically of a person beset by a spirit from without. [archaic] Tylor.
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Whether by obsession or possession, I will not determine. Burton.
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3. An excessive preoccupation of the thoughts or feelings; the persistent haunting or domination of the mind by a particular desire, idea, or image.
[PJC]

4. Hence: Any driving motive; a compelling goal; -- not necessarily implying a negative judgment, as does sense 3; as, the coach was obsessed with winning the state championship
[PJC]

5. Something that causes an obsession{3}.
[PJC]

6. The state of being obsessed.
[PJC]

obsessive
obsessional
obsessional obsessive adj. Persistently and abnormally preoccupied with some unreasonable idea.
Syn. -- compulsive.
[WordNet 1.5]

obsidian
ob*sid"i*an (?), n. [L. Obsidianus lapis, so named, according to Pliny, after one Obsidius, who discovered it in Ethiopia: cf. F. obsidiane, obsidienne. The later editions of Pliny read Obsianus lapis, and Obsius, instead of Obsidianus lapis, and Obsidius.] (Min.) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
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&hand_; In a thin section it often exhibits a fluidal structure, marked by the arrangement of microlites in the lines of the flow of the molten mass.
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Obsidional
Ob*sid"i*o*nal (?), a. [L. obsidionalis, from obsidio a siege, obsidere to besiege: cf. F. obsidional. See Obsess.] Of or pertaining to a siege.
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Obsidional crown (Rom. Antiq.), a crown bestowed upon a general who raised the siege of a beleaguered place, or upon one who held out against a siege.
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Obsigillation
Ob*sig`il*la"tion (?), n. [L. ob (see Ob-) + sigillum a seal.] A sealing up. [Obs.] Maunder.
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Obsign
Ob*sign" (?), v. t. [See Obsignate.] To seal; to confirm, as by a seal or stamp. [Obs.] Bradford.
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Obsignate
Ob*sig"nate (?), v. t. [L. obsignated, p. p. of obsignare to seal. See Ob-, and Sign.] To seal; to ratify. [Obs.] Barrow.
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Obsignation
Ob`sig*na"tion (?), n. [L. obsignatio.] The act of sealing or ratifying; the state of being sealed or confirmed; confirmation, as by the Holy Spirit.
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The spirit of manifestation will but upbraid you in the shame and horror of a sad eternity, if you have not the spirit of obsignation. Jer. Taylor.
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Obsignatory
Ob*sig"na*to*ry (?), a. Ratifying; confirming by sealing. [Obs.] Samuel Ward (1643)
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Obsolesce
Ob`so*lesce" (?), v. i. [L. obsolescere. See Obsolescent.] To become obsolescent. [R.] Fitzed. Hall.
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Obsolescence
Ob`so*les"cence (?), n. [See Obsolescent.] The state of becoming obsolete.
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Obsolescent
Ob`so*les"cent (?), a. [L. obsolescens, -entis, p. pr. of obsolescere, to wear out gradually, to fall into disuse; ob (see Ob-) + solere to use, be wont.] Going out of use; becoming obsolete; passing into desuetude.
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Obsolete
Ob"so*lete (?), a. [L. obsoletus, p. p. of obsolescere. See Obsolescent.] 1. No longer in use; gone into disuse; disused; neglected; as, an obsolete word; an obsolete statute; -- applied chiefly to words, writings, or observances.
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2. (Biol.) Not very distinct; obscure; rudimental; imperfectly developed; abortive.
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Syn. -- Ancient; antiquated; old-fashioned; antique; old; disused; neglected. See Ancient.
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Obsolete
Ob"so*lete, v. i. To become obsolete; to go out of use. [R.] Fitzed. Hall.
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Obsoletely
Ob"so*lete*ly, adv. In an obsolete manner.
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Obsoleteness
Ob"so*lete*ness, n. 1. The state of being obsolete, or no longer used; a state of desuetude.
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2. (Biol.) Indistinctness; want of development.
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Obsoletism
Ob"so*let*ism (?), n. A disused word or phrase; an archaism. Fitzed. Hall.
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Obstacle
Ob"sta*cle (?), n. [F., fr. L. obstaculum, fr. obstare to withstand, oppose; ob (see Ob-) + stare to stand. See Stand. and cf. Oust, v.] That which stands in the way, or opposes; anything that hinders progress; a hindrance; an obstruction, physical or moral.
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If all obstacles were cut away.
And that my path were even to the crown.
Shak.
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Syn. -- Impediment; obstuction; hindrance; difficulty. See Impediment, and Obstruction.
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Obstancy
Ob"stan*cy (?), n. [L. obstantia, fr. obstans, p. pr. of obstare. See Obstacle.] Opposition; impediment; obstruction. [Obs.] B. Jonson.
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Obstetrical
Obstetric
{ Ob*stet"ric (&obreve_;b*st&ebreve_;t"r&ibreve_;k), Ob*stet"ric*al (&obreve_;b*st&ebreve_;t"r&ibreve_;*k&aitalic_;l), } a. [L. obstetricius, fr. obstetrix, -icis, a midwife, fr. obstare to stand before: cf. F. obstétrique. See Obstacle.] 1. Of or pertaining to childbirth, midwifery, or the period around the time of the birth of children; as, the obstetric art.
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2. Of or pertaining to obstetrics; as, the obstetric unit of a hospital.
[PJC]

Obstetrical toad (Zool.), a European toad of the genus Alytes, especially Alytes obstetricans. The eggs are laid in a string which the male winds around his legs, and carries about until the young are hatched.
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Obstetricate
Ob*stet"ri*cate (&obreve_;b*st&ebreve_;t"r&ibreve_;*kāt), v. i. [L. obstetricatus, p. p. of obstetricare, fr. obstetrix.] To perform the office of midwife. [Obs.] “Nature does obstetricate.” Evelyn.
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Obstetricate
Ob*stet"ri*cate, v. t. To assist as a midwife. [Obs.] E. Waterhouse.
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Obstetrication
Ob*stet"ri*ca"tion (?), n. The act of assisting as a midwife; delivery. [Obs.] Bp. Hall.
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Obstetrician
Ob`ste*tri"cian (?), n. One skilled in obstetrics; an accoucheur; especially, a physician who specializes in obstetrics.
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Obstetricious
Ob`ste*tri"cious (?), a. [See Obstetric.] Serving to assist childbirth; obstetric; hence, facilitating any bringing forth or deliverance. [Obs.]
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Yet is all human teaching but maieutical, or obstetricious. Cudworth.
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Obstetrics
Ob*stet"rics (&obreve_;b*st&ebreve_;t"r&ibreve_;ks), n. [Cf. F. obstétrique. See Obstetric.] 1. The science of midwifery. [archaic]
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2. The branch of medicine that deals with childbirth or the care of women in parturition, or in the trouble incident to childbirth.
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Obstetricy
Ob*stet"ri*cy (?), n. Obstetrics. [Obs.] Dunglison.
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Obstinacy
Ob"sti*na*cy (?), n. [See Obstinate.] 1. A fixedness in will, opinion, or resolution that can not be shaken at all, or only with great difficulty; firm and usually unreasonable adherence to an opinion, purpose, or system; unyielding disposition; stubborness; pertinacity; persistency; contumacy.
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You do not well in obstinacy
To cavil in the course of this contract.
Shak.
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To shelter their ignorance, or obstinacy, under the obscurity of their terms. Locke.
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2. The quality or state of being difficult to remedy, relieve, or subdue; as, the obstinacy of a disease or evil.
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Syn. -- Pertinacity; firmness; resoluteness; inflexibility; persistency; stubbornness; perverseness; contumacy. -- Obstinacy, Pertinacity. Pertinacity denotes great firmness in holding to a thing, aim, etc. Obstinacy is great firmness in holding out against persuasion, attack, etc. The former consists in adherence, the latter in resistance. An opinion is advocated with pertinacity or defended with obstinacy. Pertinacity is often used in a good sense; obstinacy generally in a bad one. “In this reply was included a very gross mistake, and if with pertinacity maintained, a capital error.” Sir T. Browne. “Every degree of obstinacy in youth is one step to rebellion.” South.
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Obstinate
Ob"sti*nate (?), a. [L. obstinatus, p. p. of obstinare to set about a thing with firmness, to persist in; ob (see Ob-) + a word from the root of stare to stand. See Stand, and cf. Destine.] 1. Pertinaciously adhering to an opinion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; -- usually implying unreasonableness.
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I have known great cures done by obstinate resolution of drinking no wine. Sir W. Temple.
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No ass so meek, no ass so obstinate. Pope.
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Of sense and outward things. Wordsworth.
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2. Not yielding; not easily subdued or removed; as, obstinate fever; obstinate obstructions.
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Syn. -- Stubborn; inflexible; immovable; firm; pertinacious; persistent; headstrong; opinionated; unyielding; refractory; contumacious. See Stubborn.
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-- Ob"sti*nate*ly, adv. -- Ob"sti*nate*ness, n.
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Obstination
Ob`sti*na"tion (?), n. [L. obstinatio.] Obstinacy; stubbornness. [Obs.] Jer. Taylor.
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Obstipation
Ob`sti*pa"tion (?), n. [L. obstipatio a close pressure; ob (see Ob-) + stipare to press.] 1. The act of stopping up, as a passage. [Obs.] Bailey.
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2. (Med.) Extreme constipation. [Obs.] Hooper.
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Obstreperous
Ob*strep"er*ous (?), a. [L. obstreperus, from obstrepere to make a noise at; ob (see Ob-) + strepere to make a noise.] 1. Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous. “The obstreperous city.” Wordsworth.Obstreperous approbation.” Addison.
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Beating the air with their obstreperous beaks. B. Jonson.
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2. Resistant to control; unruly.
[PJC]

-- Ob*strep"er*ous*ly, adv. -- Ob*strep"er*ous*ness, n.
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Obstriction
Ob*stric"tion (?), n. [L. obstringere, obstrictum, to bind to or about.] The state of being constrained, bound, or obliged; that which constrains or obliges; obligation; bond. [R.] Milton.
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Obstringe
Ob*stringe" (?), v. t. [See Obstriction.] To constrain; to put under obligation. [R.] Bp. Gardiner.
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Obstruct
Ob*struct" (?), v. t. [imp. & p. p. Obstructed; p. pr. & vb. n. Obstructing.] [L. obstructus, p. p. of obstruere to build up before or against, to obstruct; ob (see Ob-) + struere to pile up. See Structure.]
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1. To block up; to stop up or close, as a way or passage; to place an obstacle in, or fill with obstacles or impediments that prevent or hinder passing; as, to obstruct a street; to obstruct the channels of the body.
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'T is the obstructed paths of sound shall clear. Pope.
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2. To be, or come, in the way of; to hinder from passing; to stop; to impede; to retard; as, the bar in the harbor obstructs the passage of ships; clouds obstruct the light of the sun; unwise rules obstruct legislation. “Th' impatience of obstructed love.” Johnson.
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Syn. -- To bar; barricade; stop; arrest; check; interrupt; clog; choke; impede; retard; embarrass; oppose.
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Obstructer
Ob*struct"er (?), n. One who obstructs or hinders.
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Obstruction
Ob*struc"tion (?), n. [L. obstructio.] 1. The act of obstructing, or state of being obstructed.
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2. That which obstructs or impedes; an obstacle; an impediment; a hindrance.
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A popular assembly free from obstruction. Swift.
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3. The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. [Poetic]
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To die, and go we know not where,
To lie in cold obstruction, and to rot.
Shak.
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Syn. -- Obstacle; bar; barrier; impediment; clog; check; hindrance. -- Obstruction, Obstacle. The difference between these words is that indicated by their etymology; an obstacle is something standing in the way; an obstruction is something put in the way. Obstacle implies more fixedness and is the stronger word. We remove obstructions; we surmount obstacles.
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Disparity in age seems a greater obstacle to an intimate friendship than inequality of fortune. Collier.
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The king expected to meet with all the obstructions and difficulties his enraged enemies could lay in his way. Clarendon.
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Obstructionism
Ob*struc"tion*ism (?), n. The act or the policy of obstructing progress. Lond. Lit. World.
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Obstructionist
Ob*struc"tion*ist, n. One who deliberately hinders progress; one who obstructs business, as in a legislative body. -- a. Of or pertaining to obstructionists; causing obstruction; as, obstructionist tactics. [Recent]
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Obstructive
Ob*struct"ive (?), a. [Cf. F. obstrictif.] Tending to obstruct; presenting obstacles; hindering; causing impediment. -- Ob*struct"ive*ly, adv.
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Obstructive
Ob*struct"ive, n. An obstructive person or thing.
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Obstruent
Ob"stru*ent (?), a. [L. obstruens, p. pr. of obstruere. See Obstruct.] Causing obstruction; blocking up; hindering; as, an obstruent medicine. Johnson.
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Obstruent
Ob"stru*ent, n. Anything that obstructs or closes a passage; esp., that which obstructs natural passages in the body; as, a medicine which acts as an obstruent.
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Obstupefaction
Ob*stu`pe*fac"tion (?), n. [L. obstuperfacere to stupefy.] See Stupefaction. [Obs.] Howell.
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Obstupefactive
Ob*stu`pe*fac"tive (?), a. Stupefactive. [Obs.]
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Obstupefy
Ob*stu"pe*fy (?), v. t. [Cf.L. obstupefacere. See Ob-, and Stupefy.] See Stupefy. [Obs.]
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Obtain
Ob*tain" (?), v. t. [imp. & p. p. Obtained (?); p. pr. & vb. n. Obtaining.] [F. obtenir, L. obtinere; ob (see Ob-) + tenere to hold. See Tenable.]
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1. To hold; to keep; to possess. [Obs.]
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His mother, then, is mortal, but his Sire
He who obtains the monarchy of heaven.
Milton.
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2. To get hold of by effort; to gain possession of; to procure; to acquire, in any way.
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Some pray for riches; riches they obtain. Dryden.
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By guileful fair words peace may be obtained. Shak.
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It may be that I may obtain children by her. Gen. xvi. 2.
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Syn. -- To attain; gain; procure; acquire; win; earn. See Attain. -- To Obtain, Get, Gain, Earn, Acquire. The idea of getting is common to all these terms. We may, indeed, with only a slight change of sense, substitute get for either of them; as, to get or to gain a prize; to get or to obtain an employment; to get or to earn a living; to get or to acquire a language. To gain is to get by striving; and as this is often a part of our good fortune, the word gain is peculiarly applicable to whatever comes to us fortuitously. Thus, we gain a victory, we gain a cause, we gain an advantage, etc. To earn is to deserve by labor or service; as, to earn good wages; to earn a triumph. Unfortunately, one does not always get or obtain what he has earned. To obtain implies desire for possession, and some effort directed to the attainment of that which is not immediately within our reach. Whatever we thus seek and get, we obtain, whether by our own exertions or those of others; whether by good or bad means; whether permanently, or only for a time. Thus, a man obtains an employment; he obtains an answer to a letter, etc. To acquire is more limited and specific. We acquire what comes to us gradually in the regular exercise of our abilities, while we obtain what comes in any way, provided we desire it. Thus, we acquire knowledge, property, honor, reputation, etc. What we acquire becomes, to a great extent, permanently our own; as, to acquire a language; to acquire habits of industry, etc.
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Obtain
Ob*tain", v. i. 1. To gain or have a firm footing; to be recognized or established; to become prevalent or general; to prevail; as, the custom obtains of going to the seashore in summer.
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Sobriety hath by use obtained to signify temperance in drinking. Jer. Taylor.
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The Theodosian code, several hundred years after Justinian's time, did obtain in the western parts of Europe. Baker.
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2. To prevail; to succeed. [archaic and Rare] Evelyn.
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So run that ye may obtain. 1 Cor. ix. 24.
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There is due from the judge to the advocate, some commendation, where causes are fair pleaded; especially towards the side which obtaineth not. Bacon.
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Obtainable
Ob*tain"a*ble (?), a. Capable of being obtained.
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Obtainer
Ob*tain"er (?), n. One who obtains.
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Obtainment
Ob*tain"ment (?), n. The act or process of obtaining; attainment. Milton.
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Obtected
Ob*tect"ed (?), a. [L. obtectus, p. p. of obtegere to cover over.] 1. Covered; protected. [Obs.]
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2. (Zool.) Covered with a hard chitinous case, as the pupa of certain flies; also called obtect.
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Obtemper
Ob*tem"per (?), v. t. & i. [See Obtemperate.] (Scots Law) To obey (a judgment or decree).
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Obtemperate
Ob*tem"per*ate (?), v. t. [L. obtemperare, obtemperatum to obey.] To obey. [Obs.] Johnson.
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Obtend
Ob*tend" (?), v. t. [imp. & p. p. Obtended; p. pr. & vb. n. Obtending.] [L. obtendere, obtentum, to stretch or place before or against; ob (see Ob-) + tendere to stretch.] 1. To oppose; to hold out in opposition. [Obs.] Dryden.
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2. To offer as the reason of anything; to pretend. [Obs.] Dryden
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Obtenebration
Ob*ten`e*bra"tion (?), n. [L. obtenebrate to make dark.] The act of darkening; the state of being darkened; darkness. [Obs.]
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In every megrim or vertigo, there is an obtenebration joined with a semblance of turning round. Bacon.
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Obtension
Ob*ten"sion (?), n. [L. obtentio. See Obtend.] The act of obtending. [Obs.] Johnson.
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Obtest
Ob*test" (?), v. t. [imp. & p. p. Obtested; p. pr. & vb. n. Obtesting.] [L. obtestari; ob (see Ob-) + testari to witness, fr. testis a witness.] 1. To call to witness; to invoke as a witness. [R.] Dryden.
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2. To beseech; to supplicate; to beg for. [R.]
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Obtest
Ob*test", v. i. To protest. [R.] E. Waterhouse.
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Obtestation
Ob`tes*ta"tion (?), n. [L. obtestatio.] The act of obtesting; supplication; protestation. [R.]
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Antonio asserted this with great obtestation. Evelyn.
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Obtrectation
Ob`trec*ta"tion (?), n. [L. obtrectatio, from obtrectare to detract from through envy. See Detract.] Slander; detraction; calumny. [Obs.] Barrow.
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Obtrude
Ob*trude" (?), v. t. [imp. & p. p. Obtruded, p. pr. & vb. n. Obtruding.] [L. obtrudere, obtrusum; ob (see Ob-) + trudere to thrust. See Threat.] 1. To thrust impertinently; to present to a person without warrant or solicitation; as, to obtrude one's self upon a company; to obtrude one's opinion on another.
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The objects of our senses obtrude their particular ideas upon our minds, whether we will or no. Lock.
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2. To offer with unreasonable importunity; to urge unduly or against the will. Milton.
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Obtrude
Ob*trude", v. i. To thrust one's self upon a company or upon attention; to intrude.
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Syn. -- To Obtrude, Intrude. To intrude is to thrust one's self into a place, society, etc., without right, or uninvited; to obtrude is to force one's self, remarks, opinions, etc., into society or upon persons with whom one has no such intimacy as to justify such boldness.
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Obtruder
Ob*trud"er (?), n. One who obtrudes. Boyle.
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Obtruncate
Ob*trun"cate (?), v. t. [L. obtruncatus, p. p. of obtruncare.] To deprive of a limb; to lop. [R.]
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Obtruncation
Ob`trun*ca"tion (?), n. [L. obtruncatio.] The act of lopping or cutting off. [R.] Cockeram.
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Obtrusion
Ob*tru"sion (?), n. [L. obtrusio. See Obtrude.] 1. The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world.
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2. That which is obtruded. Milton.
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Obtrusionist
Ob*tru"sion*ist, n. One who practices or excuses obtrusion. [R.] Gent. Mag.
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Obtrusive
Ob*tru"sive (?), a. Disposed to obtrude; inclined to intrude or thrust one's self or one's opinions upon others, or to enter uninvited; forward; pushing; intrusive. -- Ob*tru"sive*ly, adv. -- Ob*tru"sive*ness, n.
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Not obvious, not obtrusive, but retired. Milton.
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Obtund
Ob*tund" (?), v. t. [imp. & p. p. Obtunded; p. pr. & vb. n. Obtunding.] [L. obtundere, obtusum; ob (see Ob-) + tundere to strike or beat. See Stutter.] To reduce the edge, pungency, or violent action of; to dull; to blunt; to deaden; to quell; as, to obtund the acrimony of the gall. [Archaic] Harvey.
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They . . . have filled all our law books with the obtunding story of their suits and trials. Milton.
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Obtundent
Ob*tund"ent (?), n. [L. obtundens, p. pr. of obtundere.] (Med.) A substance which sheathes a part, or blunts irritation, usually some bland, oily, or mucilaginous matter; -- nearly the same as demulcent. Forsyth.
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Obtunder
Ob*tund"er (?), n. (Med.) That which obtunds or blunts; especially, that which blunts sensibility.
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Obturate
Ob"tu*rate (?), v. t. [imp. & p. p. Obturated (?); p. pr. & vb. n. Obturating (?).] [L. obturatus; p.p. of obturare.] To stop or close, as an opening; specif., (Ordnance), to stop (a gun breech) so as to prevent the escape of gas in firing.
[Webster 1913 Suppl.]

Obturation
Ob`tu*ra"tion (?), n. [L. obturare to stop up: cf. F. obturation.] The act of stopping up, or closing, an opening. “Deaf by an outward obturation.” Bp. Hall.
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Obturator
Ob"tu*ra`tor (?), n. [NL., fr. L. obturare to stop up: cf. F. obturateur.] 1. That which closes or stops an opening.
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2. (Surg.) An apparatus designed to close an unnatural opening, as a fissure of the palate.
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3. (Ordnance) Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.
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4. (Photog.) A camera shutter.
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Obturator
Ob"tu*ra`tor, a. (Anat.) Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve.
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Obturator foramen (Anat.), an opening situated between the public and ischial parts of the innominate bone and closed by the obturator membrane; the thyroid foramen.
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Obtusangular
Ob*tus"an`gu*lar (?), a. See Obstuseangular.
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Obtuse
Ob*tuse" (?). a. [Compar. Obtuser (&unr_;); superl. Obtusest.] [L. obtusus, p. p. of obtundere to blunt: cf. F. obtus. See Obtund.] 1. Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.
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2. Not having acute sensibility or perceptions; not alert, especially to the feelings of others; dull; stupid; as, obtuse senses. Milton.
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3. Dull; deadened; as, obtuse sound. Johnson.
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obtuse-angular
Obtuse-angled
{ Ob*tuse"-an`gled (?), ob*tuse"-an`gu*lar (?), } a. Having an obtuse angle; as, an obtuse-angled triangle.
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Obtusely
Ob*tuse"ly, adv. In an obtuse manner.
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Obtuseness
Ob*tuse"ness, n. State or quality of being obtuse.
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Obtusion
Ob*tu"sion (&unr_;), n. [L. obtusio, from obtundere to blunt. See Obtund.] 1. The act or process of making obtuse or blunt.
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2. The state of being dulled or blunted; as, the obtusion of the senses. Harvey.
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Obtusity
Ob*tu"si*ty (?), n. Obtuseness. Lond. Quart. Rev.
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Obumbrant
Ob*um"brant (?), a. [L. obumbrans, p. pr.] (Zool.) Overhanging; as, obumbrant feathers.
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Obumbrate
Ob*um"brate (?), v. t. [L. obumbratus, p. p. of obumbrare to overshadow, cloud; ob + umbrare to shade.] To shade; to darken; to cloud. [R.] Howell.
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Obumbration
Ob`um*bra"tion (?), n. [L. obumbratio.] Act of darkening or obscuring. [R.] Sir T. More.
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Obuncous
Ob*un"cous (?), a. [L. obuncus; ob (see Ob-) + uncus hooked.] Hooked or crooked in an extreme degree. Maunder.
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Obvention
Ob*ven"tion (?), n. [L. obvention, fr. obvenire to come before or in the way of, to befall; ob (see Ob-) + venire to come: cf. F. obvention.] The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering. [Obs.] “Tithes and other obventions.” Spenser.
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Legacies bequeathed by the deaths of princes and great persons, and other casualities and obventions. Fuller.
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Obversant
Ob*vers"ant (?), a. [L. obversans, p. pr. of obversari to hover before; ob (see Ob-) + versare to move about.] Conversant; familiar. [Obs.] Bacon.
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Obverse
Ob*verse" (&obreve_;b*v&etilde_;rs"), a. [L. obversus, p. p. of obvertere. See Obvert.] Having the base, or end next the attachment, narrower than the top, as a leaf.
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Obverse
Ob"verse (&obreve_;b"v&etilde_;rs), n. [Cf. F. obverse, obvers. See Obverse, a.] 1. The face of a coin which has the principal image or inscription upon it; -- the other side being the reverse.
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2. Anything necessarily involved in, or answering to, another; the more apparent or conspicuous of two possible sides, or of two corresponding things.
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The fact that it [a belief] invariably exists being the obverse of the fact that there is no alternative belief. H. Spencer.
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Obversely
Ob*verse"ly (&obreve_;b*v&etilde_;rs"l&ybreve_;), adv. In an obverse manner.
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Obversion
Ob*ver"sion (&obreve_;b*v&etilde_;r"shŭn), n. [L. obversio a turning towards.] 1. The act of turning toward or downward.
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2. (Logic) The act of immediate inference, by which we deny the opposite of anything which has been affirmed; as, all men are mortal; then, by obversion, no men are immortal. This is also described as “immediate inference by privative conception.” Bain.
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Obvert
Ob*vert" (?), v. t. [imp. & p. p. Obverted; p. pr. & vb. n. Obverting.] [L. obvertere; ob (see Ob-) + vertere to turn. See Verse.] To turn toward.
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If its base be obverted towards us. I. Watts.
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Obviate
Ob"vi*ate (?), v. t. [imp. & p. p. Obviated (?); p. pr. & vb. n. Obviating.] [L. obviare; ob (see Ob-) + viare to go, fr. via way. See Voyage.]
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1. To meet in the way. [Obs.]
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Not to stir a step to obviate any of a different religion. Fuller.
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2. To anticipate; to prevent by interception; to remove from the way or path; to make unnecessary; as, to obviate the necessity of going.
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To lay down everything in its full light, so as to obviate all exceptions. Woodward.
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obviating
obviating adj. pren. making impossible or unnecessary.
Syn. -- preclusive.
[WordNet 1.5]

Obviation
Ob`vi*a"tion (?), n. The act of obviating, or the state of being obviated.
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Obvious
Ob"vi*ous (?), a. [L. obvius; ob (see Ob-) + via way. See Voyage.] 1. Opposing; fronting. [Obs.]
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To the evil turn
My obvious breast.
Milton.
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2. Exposed; subject; open; liable. [Obs.]Obvious to dispute.” Milton.
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3. Easily discovered, seen, or understood; readily perceived by the eye or the intellect; plain; evident; apparent; as, an obvious meaning; an obvious remark.
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Apart and easy to be known they lie,
Amidst the heap, and obvious to the eye.
Pope.
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Syn. -- Plain; clear; evident. See Manifest.
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-- Ob"vi*ous*ly, adv. -- Ob"vi*ous-ness, n.
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Obvoluted
Obvolute
{ Ob"vo*lute (?), Ob`vo*lu"ted (?), } a. [L. obvolutus, p. p. of obvolvere to wrap round; ob (see Ob-) + volvere to roll.] Overlapping; contorted; convolute; -- applied primarily, in botany, to two opposite leaves, each of which has one edge overlapping the nearest edge of the other, and secondarily to a circle of several leaves or petals which thus overlap.
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Oby
O"by (?), n. See Obi.
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Oca
O"ca (?), n. [Sp.] (Bot.) A Peruvian name for certain species of Oxalis (Oxalis crenata, and Oxalis tuberosa) which bear edible tubers.
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Ocarina
Oc`a*ri"na (?), n. [Cf. It. carino pretty.] (Mus.) A kind of small simple wind instrument.
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Occamy
Oc"ca*my (?), n. [A corruption of alchemy.] An alloy imitating gold or silver. [Written also ochimy, ochymy, etc.]
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Occasion
Oc*ca"sion (&obreve_;k*kā"zhŭn), n. [F. occasion, L. occasio, fr. occidere, occasum, to fall down; ob (see Ob-) + cadere to fall. See Chance, and cf. Occident.] 1. A falling out, happening, or coming to pass; hence, that which falls out or happens; occurrence; incident; event.
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The unlooked-for incidents of family history, and its hidden excitements, and its arduous occasions. I. Taylor.
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2. A favorable opportunity; a convenient or timely chance; convenience.
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Sin, taking occasion by the commandment, deceived me. Rom. vii. 11.
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I'll take the occasion which he gives to bring
Him to his death.
Waller.
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3. An occurrence or condition of affairs which brings with it some unlooked-for event; that which incidentally brings to pass an event, without being its efficient cause or sufficient reason; accidental or incidental cause.
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Her beauty was the occasion of the war. Dryden.
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4. Need; exigency; requirement; necessity; as, I have no occasion for firearms.
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After we have served ourselves and our own occasions. Jer. Taylor.
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When my occasions took me into France. Burke.
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5. A reason or excuse; a motive; a persuasion.
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Whose manner was, all passengers to stay,
And entertain with her occasions sly.
Spenser.
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On occasion, (a) in case of need; in necessity; as convenience requires. “That we might have intelligence from him on occasion,” De Foe. -- (b) occasionally; from time to time; now and then.
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Syn. -- Need; incident; use. See Opportunity.
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Occasion
Oc*ca"sion (&obreve_;k*kā"zhŭn), v. t. [imp. & p. p. Occasioned (&obreve_;k*kā"zhŭnd); p. pr. & vb. n. Occasioning.] [Cf. F. occasionner.] To give occasion to; to cause; to produce; to induce; as, to occasion anxiety. South.
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If we inquire what it is that occasions men to make several combinations of simple ideas into distinct modes. Locke.
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Occasionable
Oc*ca"sion*a*ble (&obreve_;k*kā"zhŭn*&adot_;*b'l), a. Capable of being occasioned or caused. Barrow.
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Occasional
Oc*ca"sion*al (&obreve_;k*kā"zhŭn*&aitalic_;l), a. [Cf. F. occasionnel.] 1. Occuring at times, but not constant, regular, or systematic; made or happening as opportunity requires or admits; casual; incidental; as, occasional remarks, or efforts.
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The . . . occasional writing of the present times. Bagehot.
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2. Produced by accident; as, the occasional origin of a thing. [Obs.] Sir T. Browne.
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3. Of or pertaining to an occasion or to occasions; intended for a specific occasion; for use only when needed, and not regularly.
[PJC]

Occasional cause (Metaph.), some circumstance preceding an effect which, without being the real cause, becomes the occasion of the action of the efficient cause; thus, the act of touching gunpowder with fire is the occasional, but not the efficient, cause of an explosion.
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Occasionalism
Oc*ca"sion*al*ism (?), n. (Metaph.) The system of occasional causes; -- a name given to certain theories of the Cartesian school of philosophers, as to the intervention of the First Cause, by which they account for the apparent reciprocal action of the soul and the body.
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Occasionality
Oc*ca`sion*al"i*ty (?), n. Quality or state of being occasional; occasional occurrence. [R.]
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Occasionally
Oc*ca"sion*al*ly (?), adv. In an occasional manner; on occasion; at times, as convenience requires or opportunity offers; not regularly. Stewart.
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The one, Wolsey, directly his subject by birth; the other, his subject occasionally by his preferment. Fuller.
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Occasionate
Oc*ca"sion*ate (?), v. t. To occasion. [Obs.]
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The lowest may occasionate much ill. Dr. H. More.
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Occasioner
Oc*ca"sion*er (?), n. One who, or that which, occasions, causes, or produces. Bp. Sanderson.
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Occasive
Oc*ca"sive (?), a. [L. occasivus, fr. occasus a going down, setting of the heavenly bodies, fr. occidere to fall or down. See Occasion.] Of or pertaining to the setting sun; falling; descending; western.
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Occecation
Oc*ce*ca"tion (?), n. [L. occaecatio, fr. occaecare to make blind; ob + caecare to blind, fr. caecus blind.] The act of making blind, or the state of being blind. [R.] “This inward occecation.” Bp. Hall.
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Occident
Oc"ci*dent (?), n. [F., fr. L. occidens, occidentis, fr. occidents, p. pr. of occidere to fall or go down. See Occasion.] The part of the horizon where the sun last appears in the evening; that part of the earth towards the sunset; the west; -- opposed to orient. Specifically, in former times, Europe as opposed to Asia; now, also, the Western hemisphere. Chaucer.
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I may wander from east to occident. Shak.
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Occidental
Oc`ci*den"tal (?), a. [L. occidentalis; cf. F. occidental.] 1. Of, pertaining to, or situated in, the occident, or west; western; -- opposed to oriental; as, occidental climates, or customs; an occidental planet.
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2. Possessing inferior hardness, brilliancy, or beauty; -- used of inferior precious stones and gems, because those found in the Orient are generally superior.
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Occidentals
Oc`ci*den"tals (?), n. pl. (Eccl.) Western Christians of the Latin rite. See Orientals. Shipley.
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Occiduous
Oc*cid"u*ous (?), a. [L. occiduus, fr. occidere to go down.] Western; occidental. [R.] Blount.
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Occipital
Oc*cip"i*tal (?), a. [Cf. F. occipital.] (Anat.) Of or pertaining to the occiput, or back part of the head, or to the occipital bone.
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Occipital bone (Anat.), the bone which forms the posterior segment of the skull and surrounds the great foramen by which the spinal cord leaves the cranium. In the higher vertebrates it is usually composed of four bones, which become consolidated in the adult. -- Occipital point (Anat.), the point of the occiput in the mesial plane farthest from the ophryon.
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Occipital
Oc*cip"i*tal, n. (Anat.) The occipital bone.
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Occipito-
Oc*cip"i*to- (&unr_;). [See Occiput.] A combining form denoting relation to the occiput, or situation near the occiput; as, occipito-axial; occipito-mastoid.
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Occipitoaxial
Oc*cip`i*to*ax"i*al (?), a. (Anat.) Of or pertaining to the occipital bone and second vertebra, or axis.
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Occiput
Oc"ci*put (?), n.; pl. L. Occipita (#), E. Occiputs. [L., fr. ob (see Ob-) + caput head. See Chief.] 1. (Anat.) The back, or posterior, part of the head or skull; the region of the occipital bone.
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2. (Zool.) A plate which forms the back part of the head of insects.
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Occision
Oc*ci"sion (?), n. [L. occisio, fr. occidere, occisium, to cut down, to kill; ob (see Ob-) + caedere to cut.] A killing; the act of killing. [Obs.] Sir M. Hale.
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Occlude
Oc*clude" (?), v. t. [L. occludere, occlusum; ob (see Ob-) + claudere to shut.] 1. To shut up; to close. Sir T. Browne.
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2. (Chem.) To take in and retain; to absorb; -- said especially with respect to gases; as, iron, platinum, and palladium occlude large volumes of hydrogen.
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Occludent
Oc*clud"ent (?), a. [L. occludens, p. pr. of occludere.] Serving to close; shutting up. -- n. That which closes or shuts up. Sterne.
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Occluse
Oc*cluse" (?), a. [L. occlusus, p. p. See Occlude.] Shut; closed. [Obs.] Holder.
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Occlusion
Oc*clu"sion (?), n. [See Occlude.] 1. The act of occluding, or the state of being occluded.
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Constriction and occlusion of the orifice. Howell.
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2. (Med.) The transient approximation of the edges of a natural opening; imperforation. Dunglison.
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Occlusion of gases (Chem. & Physics), the phenomenon of absorbing gases, as exhibited by platinum, palladium, iron, or charcoal; thus, palladium absorbs, or occludes, nearly a thousand times its own volume of hydrogen, and in this case a chemical compound seems to be formed.
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Occrustate
Oc*crus"tate (?), v. t. [See Ob-, and Crustated.] To incrust; to harden. [Obs.] Dr. H. More.
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Occult
Oc*cult" (?), a. [L. occultus, p. p. of occulere to cover up, hide; ob (see Ob-) + a root prob. akin to E. hell: cf. F. occulte.] Hidden from the eye or the understanding; invisible; secret; concealed; unknown.
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It is of an occult kind, and is so insensible in its advances as to escape observation. I. Taylor.
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Occult line (Geom.), a line drawn as a part of the construction of a figure or problem, but not to appear in the finished plan. -- Occult qualities, those qualities whose effects only were observed, but the nature and relations of whose productive agencies were undetermined; -- so called by the schoolmen. -- Occult sciences, those sciences of the Middle Ages which related to the supposed action or influence of occult qualities, or supernatural powers, as alchemy, magic, necromancy, and astrology.
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Occult
Oc*cult", v. t. To eclipse; to hide from sight.
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Occultation
Oc`cul*ta"tion (?), n. [L. occultatio a hiding, fr. occultare, v. intens. of occulere: cf. F. occultation. See Occult.] 1. (Astron.) The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; -- applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries.
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2. (Fig.:) The state of being occult.
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The reappearance of such an author after those long periods of occultation. Jeffrey.
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Circle of perpetual occultation. See under Circle.
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Occulted
Oc*cult"ed, a. 1. Hidden; secret. [Obs.] Shak.
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2. (Astron.) Concealed by the intervention of some other heavenly body, as a star by the moon.
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Occulting
Oc*cult"ing (?), n. Same as Occultation.
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Occultism
Oc*cult"ism (?), n. 1. A certain Oriental system of theosophy. A. P. Sinnett.
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2. Belief in occult powers or in supernatural forces other than the God of traditional religions, such as in magic, necromancy, alchemy, and astrology.
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3. The study and alleged use of supernatural agencies as in magic, astrology, witchcraft, alchemy, necromancy, spiritualism (communication with the dead), and fortune-telling.
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Occultist
Oc*cult"ist, n. An adherent of occultism.
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Occultly
Oc*cult"ly, adv. In an occult manner.
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Occultness
Oc*cult"ness, n. State or quality of being occult.
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Occupancy
Oc"cu*pan*cy (?), n. [See Occupant.] 1. The act of taking or holding possession, especially of real property or rental property; possession; occupation.
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2. The state or condition of being occupied; as, occupancy by more than 250 people is dangerous and unlawful.
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3. The period of time during which one occupies a property.
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Title by occupancy (Law), a right of property acquired by taking the first possession of a thing, or possession of a thing which belonged to nobody, and appropriating it. Blackstone. Kent.
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Occupant
Oc"cu*pant (?), n. [L. occupans, p. pr. of occupare: cf. F. occupant. See Occupy.] 1. One who occupies, or takes possession; one who has the actual use or possession, or is in possession, of a thing; as, the occupant of the apartment is not at home.
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&hand_; This word, in law, sometimes signifies one who takes the first possession of a thing that has no owner.
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2. A prostitute. [Obs.] Marston.
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Occupate
Oc"cu*pate (?), v. t. [L. occupatus, p. p. of occupare. See Occupy.] To occupy. [Obs.] Bacon.
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Occupation
Oc`cu*pa"tion (?), n. [L. occupatio: cf. F. occupation.] 1. The act or process of occupying or taking possession; actual possession and control; the state of being occupied; a holding or keeping; tenure; use; as, the occupation of lands by a tenant.
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2. That which occupies or engages the time and attention.
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3. Specfically: The principal business of one's life; the principal work by which one earns one's livelihood; vocation; employment; profession; calling; trade; avocation; as, these days many people continue to practice their occupation well into their seventies.
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Absence of occupation is not rest. Cowper.
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Occupation bridge (Engin.), a bridge connecting the parts of an estate separated by a railroad, a canal, or an ordinary road.
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Syn. -- Occupancy; possession; tenure; use; employment; avocation; engagement; vocation; calling; office; trade; profession.
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occupational
occupational adj. Of or pertaining to an occupation{3} or occupations{3}; caused by or incidental to an occupation{3}; as, occupational hazard; occupational illness.
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occupied
occupied adj. 1. Engaged; in use; being used by a person and not free for use by someone else; as, the wc is occupied. Opposite of free, available, and unoccupied.
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2. Inhabited, lived-in, tenanted; having residents; -- of dwelling units. [Narrower terms: owner-occupied] WordNet 1.5]

3. Overrun, taken over; -- of countries or territories; as, occupied France. Opposite of unoccupied.
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4. Busy; actively or fully engaged in some activity; -- of people. Opposite of idle.
Syn. -- employed, engaged.
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Occupier
Oc"cu*pi`er (?), n. 1. One who occupies, or has possession.
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2. One who follows an employment; hence, a tradesman. [Obs.] “Merchants and occupiers.” Holland.
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The occupiers of thy merchandise. Ezek. xxvii. 27.
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Occupy
Oc"cu*py (?), v. t. [imp. & p. p. Occupied (?); p. pr. & vb. n. Occupying (?).] [OE. occupien, F. occuper, fr.L. occupare; ob (see Ob-) + a word akin to capere to take. See Capacious.] 1. To take or hold possession of; to hold or keep for use; to possess.
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Woe occupieth the fine [end] of our gladness. Chaucer.
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The better apartments were already occupied. W. Irving.
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2. To hold, or fill, the dimensions of; to take up the room or space of; to cover or fill; as, the camp occupies five acres of ground. Sir J. Herschel.
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3. To possess or use the time or capacity of; to engage the service of; to employ; to busy.
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An archbishop may have cause to occupy more chaplains than six. Eng. Statute (Hen. VIII. )
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They occupied themselves about the Sabbath. 2 Macc. viii. 27.
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4. To do business in; to busy one's self with. [Obs.]
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All the ships of the sea, with their mariners, were in thee to occupy the merchandise. Ezek. xxvii. 9.
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Not able to occupy their old crafts. Robynson (More's Utopia).
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5. To use; to expend; to make use of. [Obs.]
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All the gold that was occupied for the work. Ex. xxxviii. 24.
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They occupy not money themselves. Robynson (More's Utopia).
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6. To have sexual intercourse with. [Obs.] Nares.
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Occupy
Oc"cu*py, v. i. 1. To hold possession; to be an occupant.Occupy till I come.” Luke xix. 13.
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2. To follow business; to traffic.
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occupying
occupying n. the act of taking occupancy.
Syn. -- occupation, moving in.
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Occur
Oc*cur" (?), v. i. [imp. & p. p. Occurred(?); p. pr. & vb. n. Occurring (?).] [L. occurrere, occursum; ob (see Ob-) + currere to run. See Course.] 1. To meet; to clash. [Obs.]
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The resistance of the bodies they occur with. Bentley.
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2. To go in order to meet; to make reply. [Obs.]
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I must occur to one specious objection. Bentley.
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3. To meet one's eye; to be found or met with; to present itself; to appear.
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In Scripture, though the word heir occur, yet there is no such thing as “heir” in our author's sense. Locke.
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4. To happen; to take place; as, I will write if opportunity occurs.
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5. To come to the mind; to arise in the mind; to suggest itself; to be presented to the imagination or memory; -- of an idea or thought; as, it never occurred to me to call John to ask.
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There doth not occur to me any use of this experiment for profit. Bacon.
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Occurrence
Oc*cur"rence (?), n. [Cf. F. occurrence. See Occur.] 1. A coming or happening; as, the occurrence of a railway collision.
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Voyages detain the mind by the perpetual occurrence and expectation of something new. I. Watts.
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2. Any event or incident; esp., one which happens without being designed or expected; as, an unusual occurrence, or the ordinary occurrences of life.
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All the occurrence of my fortune. Shak.
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Syn. -- See Event.
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Occurrent
Oc*cur"rent (?), a. [L. occurrens, -entis, p. pr. of occurrere: cf. F. occurrent. See Occur.] Occurring or happening; hence, incidental; accidental.
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Occurrent
Oc*cur"rent (?), n. 1. One who meets; hence, an adversary. [Obs.] Holland.
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2. Anything that happens; an occurrence. [Obs.]
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These we must meet with in obvious occurrents of the world. Sir T. Browne.
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Occurse
Oc*curse" (?), n. [L. occursus.] Same as Occursion. [Obs.] Bentley.
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Occursion
Oc*cur"sion (?), n. [L. occursio. See Occur.] A meeting; a clash; a collision. [Obs.] Boyle.
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Ocean
O"cean (ō"sh&aitalic_;n), n. [F. océan, L. oceanus, Gr. 'wkeano`s ocean, in Homer, the great river supposed to encompass the earth.] 1. The whole body of salt water which covers more than three fifths of the surface of the globe; -- called also the sea, or great sea.
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Like the odor of brine from the ocean
Comes the thought of other years.
Longfellow.
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2. One of the large bodies of water into which the great ocean is regarded as divided, as the Atlantic, Pacific, Indian, Arctic and Antarctic oceans.
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3. An immense expanse; any vast space or quantity without apparent limits; as, the boundless ocean of eternity; an ocean of affairs. Locke.
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You're gonna need an ocean
Of calamine lotion.
Lieber & Stoller (Poison Ivy: song lyrics, 1994)
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Ocean
O"cean (ō"sh&aitalic_;n), a. Of or pertaining to the main or great sea; as, the ocean waves; an ocean stream. Milton.
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oceanfront
oceanfront a. Bordering an ocean; as, oceanfront property.
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oceanfront
oceanfront n. Land bordering an ocean.
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oceangoing
oceangoing adj. capable of crossing an ocean; used on the high seas; -- used mostly of ships; as, oceangoing vessels.
Syn. -- seafaring, seagoing.
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Oceania
Oceania prop. n. A large group of islands in the south Pacific sometimes including Australasia and the Malay Archipelago.
Syn. -- Oceanica.
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Oceanic
O`ce*an"ic (ō`sh&euptack_;*ăn"&ibreve_;k), a. [Cf. F. océanique. See Ocean.] 1. Of or pertaining to the ocean; found or formed in or about, or produced by, the ocean; frequenting the ocean, especially mid-ocean.
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Petrels are the most aerial and oceanic of birds. Darwin.
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2. Of or pertaining to Oceania or its inhabitants.
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Oceanica
Oceanica prop. n. Same as Oceania.
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Oceanid
Oceanid prop. n. (Greek mythology) A daughter of the Titans Oceanus and Tethys.
Syn. -- sea nymph.
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oceanographer
oceanographer n. A scientist who studies physical and biological aspects of the seas.
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Oceanography
O`cean*og"ra*phy (?), n. [Ocean + -graphy.] A description of the ocean.
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Oceanology
O`cean*ol"o*gy (?), n. [Ocean + -logy.] That branch of science which relates to the ocean.
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Oceanus
O*ce"a*nus (?), n. [L., from Gr. &unr_;.] (Gr.Myth.) The god of the great outer sea, or the river which was believed to flow around the whole earth.
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Ocellary
O*cel"la*ry (?), a. Of or pertaining to ocelli.
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Ocellate
O*cel"late (?), a. Same as Ocellated.
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Ocellated
O*cel"la*ted (?), a. [L. ocellatus, fr. ocellus a little eye, dim. of oculus an eye.] 1. Resembling an eye.
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2. Marked with eyelike spots of color; as, the ocellated blenny.
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Ocellated turkey (Zool.), the wild turkey of Central America (Meleagris ocellata).
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Ocellus
O*cel"lus (?), n.; pl. Ocelli (#). [L., dim. of oculus an eye.] (Zool.) (a) A little eye; a minute simple eye found in many invertebrates. (b) An eyelike spot of color, as those on the tail of the peacock.
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Oceloid
O"ce*loid (?), a. [Ocelot + -oid.] (Zool.) Resembling the ocelot.
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Ocelot
O"ce*lot (?), n. [Mexican ocelotl.] (Zool.) An American feline carnivore (Felis pardalis). It ranges from the Southwestern United States to Patagonia. It is covered with blackish ocellated spots and blotches, which are variously arranged. The ground color varies from reddish gray to tawny yellow.
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Ochre
Ocher
{ O"cher, O"chre } (?), n. [F. ocre, L. ochra, fr. Gr. &unr_;, from (&unr_;) pale, pale yellow.] 1. (Min.) (a) A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), -- used as a pigment in making paints, etc. The name is also applied to clays of other colors. (b) A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite.
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2. The color of ocher{1}, varying around orange, from more yellowish to more reddish in tint.
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ocher mutation
o"cher mu"tation n. [A humorous variation on the term amber mutation.] (Microbiology, Molecular biology) A mutation in which the base sequence of one of the codons in the messenger RNA has been converted to UAA. Such a mutation may be conditionally suppressed, as can an amber mutation, by the presence of a special transfer RNA. -- ocher mutant, n.
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Ochreous
Ocherous
{ O"cher*ous, O"chre*ous } (?), a. [Cf. F. ocreux.] Of or pertaining to ocher; containing or resembling ocher; as, ocherous matter; ocherous soil.
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Ochery
O"cher*y (?), a. Ocherous. [Written also ochrey, ochry.]
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Ochimy
Och`i*my (?), n. [Obs.] See Occamy.
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Ochlesis
Och*le"sis (?), n. [NL., fr. Gr. &unr_; disturbance, fr. 'o`chlos crowd, mob.] (Med.) A general morbid condition induced by the crowding together of many persons, esp. sick persons, under one roof. G. Gregory.
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Ochlocracy
Och*loc"ra*cy (?), n. [Gr. &unr_;; 'o`chlos the populace, multitude + kratei^n to be strong, to rule, kra`tos strength: cf. F. ochlocratie.] A form of government by the multitude; a mobocracy; mob rule. Hare.
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Ochlocratical
Ochlocratic
{ Och`lo*crat`ic (?), Och`lo*crat`ic*al (?), } a. Of or pertaining to ochlocracy; having the form or character of an ochlocracy; mobocratic.
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-- Och`lo*crat"ic*al*ly, adv.
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Ochotonidae
Ochotonidae prop. n. A natural family of mammals including pikas and extinct forms.
Syn. -- family Ochotonidae.
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Ochraceous
O*chra"ceous (?), a. Ocherous.
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Ochre
O"chre (?), n. (Min.) See Ocher.
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Ochrea
O"chre*a (?), n.; pl. Ochreaee (#). [L.] 1. (Antiq.) A greave or legging.
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2. (Bot.) A kind of sheath formed by two stipules united round a stem.
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Ochreated
Ochreate
{ O"chre*ate (?), O"chre*a`ted (?), } a. 1. Wearing or furnished with an ochrea or legging; wearing boots; booted.
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A scholar undertook . . . to address himself ochreated unto the vice chancellor. Fuller.
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2. (Bot.) Provided with ochrea, or sheathformed stipules, as the rhubarb, yellow dock, and knotgrass.
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Ochreous
O"chre*ous (?), a. See Ocherous.
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Ochrey
O"chrey (?), a. See Ochery.
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Ochroleucous
Och`ro*leu"cous (?), a. [Gr. &unr_; ocher + &unr_; white.] Yellowish white; having a faint tint of dingy yellow. Gray.
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Ochry
O"chry (?), a. See Ochery.
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Ochymy
Och"y*my (?), n. [Obs.] See Occamy.
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-ock
-ock (?). [AS. -uc.] A suffix used to form diminutives; as, bullock, hillock.
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Ocra
O"cra (?), n. (Bot.) See Okra.
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Ocrea
O"cre*a (?), n. [L.] See Ochrea.
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Ocreated
Ocreate
{ O"cre*ate (?), O"cre*a"ted (?), } a. [See Ochrea.] Same as Ochreate, Ochreated.
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Octa-
Oc"ta- (?). A prefix meaning eight. See Octo-.
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Octachord
Oc"ta*chord (?), n. [Gr. &unr_; with eight strings; 'okta- (for 'oktw` eight) + &unr_; string, chord: cf. F. octacorde.] (Mus.) An instrument of eight strings; a system of eight tones. [Also written octochord.]
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Octad
Oc"tad (?), n. [Gr. &unr_;, &unr_;, the number eight.] 1. (Chem.) An atom or radical which has a valence of eight, or is octavalent.
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2. A group of eight things.
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Octaedral
Oc`ta*e"dral (?), a. See Octahedral.
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Octaemeron
Oc`ta*em"e*ron (?), n. [NL., fr. Gr. &unr_;, neut. of &unr_; of the eighth day.] (Eccl.) A fast of eight days before a great festival. Shipley.
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Octagon
Oc"ta*gon (?), n. [Gr. &unr_; eight-cornered; 'okta- (for 'oktw` eight) + &unr_; an angle: cf. F. cctogone.] 1. (Geom.) A plane figure of eight sides and eight angles.
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2. Any structure (as a fortification) or place with eight sides or angles.
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Regular octagon, one in which the sides are all equal, and the angles also are all equal.
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octagonal
oc*tag"o*nal (?), a. Having eight sides and eight angles.
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octagynous
oc*tag"y*nous (?), a. [Octa- + Gr. gynh` wife.] (Bot.) Having eight pistils or styles; octogynous.
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octahedral
oc`ta*he"dral (&obreve_;k`t&adot_;*hē"dr&aitalic_;l), a. [See octahedron.] Having eight faces or sides; of, pertaining to, or formed in, octahedrons; as, octahedral cleavage; an octahedral crystal.
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octahedral borax (Chem.), borax obtained from a saturated solution in octahedral crystals, which contain five molecules of water of crystallization; distinguished from common or prismatic borax. -- Octahedral iron ore (Min.), magnetite.
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octahedrite
oc`ta*he"drite (&obreve_;k`t&adot_;*hē"drīt), n. (Min.) Titanium dioxide occurring in acute octahedral crystals.
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octahedron
oc`ta*he"dron (&obreve_;k`t&adot_;*hē"dr&obreve_;n), n. [Gr. 'okta`edron, fr. 'okta`edros eight-sided; 'okta- (for 'oktw` eight) + "e`dra seat, base, from "e`zesqai to sit.] (Geom.) A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.
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octamer
oc"ta*mer (&obreve_;k"tŭ*m&etilde_;r), n. [Octa- + Gr. me`ros part.] (Chem.) A molecule composed of eight monomer units bound to each other, usually in a linear array; as, an octamer formed from eight nucleotides is called an octanucleotide.
[PJC]

An example of an octapeptide might be represented using the standard abbreviations for the component amino acids, e.g.: met-ala-ser-glu-lys-ala-val-gly

An octanucleotide might be represented using the standard single-letter abbreviations for the component mononucleotides, e.g.: ATGCATGC.

[PJC]

octamerous
oc*tam"er*ous (ocr/k*tăm"&etilde_;r*ŭs), a. [Octa- + Gr. me`ros part.] (Biol.) Having the parts in eights; as, an octamerous flower; octamerous mesenteries in polyps.
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Octameter
Oc*tam"e*ter (?), n. [Cf.L. octameter in eight feet. See Octa-, and meter.] (Pros.) A verse containing eight feet; as, --

Deep&bprime_; in|to&bprime_; the | dark&bprime_;ness | peer&bprime_;ing, | long&bprime_; I | stood&bprime_; there | wond'&bprime_;ring, | fear&bprime_;ing.
Poe.
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octander
oc*tan"der (?), n. One of the Octandria.
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Octandria
Oc*tan"dri*a (?), prop. n. pl. [NL., fr. Gr. 'okta- (for 'oktw` eight) + &unr_;, &unr_;, male, man.] (Bot.) A Linnaean class of plants, in which the flowers have eight stamens not united to one another or to the pistil.
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octandrous
octandrian
{ oc*tan"dri*an (?), oc*tan"drous (?), } a. (Bot.) Of or pertaining to the Octandria; having eight distinct stamens.
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octane
oc"tane (&obreve_;k"tān), n. [See Octa-] (Chem.) Any one of a group of metametric hydrocarbons (C8H18) of the methane (paraffin) series. The most important is a colorless, volatile, inflammable liquid, found in petroleum, and a constituent of gasoline or ligroin.
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Octangular
Oc*tan"gu*lar (?), a. [L. octangulus eight-cornered; octo eight + angulus angle.] Having eight angles; eight-angled. -- Oc*tan"gu*lar*ness, n.
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Octant
Oc"tant (?), n. [L. octans, -antis. fr. octo eight. See Octave.] 1. (Geom.) The eighth part of a circle; an arc of 45 degrees.
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2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.
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3. An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O°, but being itself the eighth part of a circle. Cf. Sextant.
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4. (Math. & Crystallog.) One of the eight parts into which a space is divided by three coordinate planes.
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octanucleotide
oc`ta*nu"cle*o*tide (&obreve_;k`tŭ*nū"klē*&ouptack_;*tīd), n. [Octa- + nucleotide.] (Chem.) A molecule composed of eight nucleotide units bound to each other by phosphodiester bonds in a linear array; as, a partial digest of DNA or RNA may include octanucleotides. See octamer.
[PJC]

octapeptide
oc`ta*pep"tide (&obreve_;k`tŭ*p&ebreve_;p"tīd), n. [Octa- + peptide.] (Chem.) A molecule composed of eight amino acid units bound to each other by peptide bonds, usually in a linear array. See octamer.
[PJC]

Octapla
Oc"ta*pla (?), prop. n.; etymol. pl., but syntactically sing. [NL., fr. Gr. 'okta- (for 'oktw` eight) + -pla, as in E. hexapla; cf. Gr. &unr_; eightfold.] A portion of the Old Testament prepared by Origen in the 3d century, containing the Hebrew text and seven Greek versions of it, arranged in eight parallel columns.
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Octaroon
Oc`ta*roon" (?), n. See Octoroon.
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Octastyle
Oc"ta*style (?), a. See Octostyle.
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Octateuch
Oc"ta*teuch (?), n. [L. octateuchus, Gr. &unr_;.] A collection of eight books; especially, the first eight books of the Old Testament. [R.]
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Octavalent
Oc*tav"a*lent (?), a. [Octa- + L. valens, p. pr. See Valence.] (Chem.) Having a valence of eight; capable of being combined with, exchanged for, or compared with, eight atoms of hydrogen; -- said of certain atoms or radicals.
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Octave
Oc"tave (?), n. [F., fr. L. octava an eighth, fr. octavus eighth, fr. octo eight. See Eight, and cf. Octavo, Utas.] 1. The eighth day after a church festival, the festival day being included; also, the week following a church festival. “The octaves of Easter.” Jer. Taylor.
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2. (Mus.) (a) The eighth tone in the scale; the interval between one and eight of the scale, or any interval of equal length; an interval of five tones and two semitones. (b) The whole diatonic scale itself.
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&hand_; The ratio of a musical tone to its octave above is 1:2 as regards the number of vibrations producing the tones.
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3. (Poet.) The first two stanzas of a sonnet, consisting of four verses each; a stanza of eight lines.
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With mournful melody it continued this octave. Sir P. Sidney.
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Double octave. (Mus.) See under Double. -- Octave flute (Mus.), a small flute, the tones of which range an octave higher than those of the German or ordinary flute; -- called also piccolo. See Piccolo.
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4. A small cask of wine, the eighth part of a pipe.
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Octave
Oc"tave (?), a. Consisting of eight; eight. Dryden.
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Octavo
Oc*ta"vo (?), n.;pl. Octavos (#). [L. in octavo; in in + octavo, abl. of octavus. See Octave.] A book composed of sheets each of which is folded into eight leaves; hence, indicating more or less definitely a size of book so made; -- usually written 8vo or 8°.
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Octavo
Oc*ta"vo, a. Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.
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Octene
Oc"tene (?), n. [See Octo-.] (Chem.) Same as Octylene.
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Octennial
Oc*ten"ni*al (?), a. [L. octennium a period of eight years; octo eight + annus year.] Happening every eighth year; also, lasting a period of eight years. Johnson. -- Oc*ten"ni*al*ly, adv.
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octet
oc*tet" (?), n. [From L. octo eight, like E. duet, fr.L. duo. See Octave.] 1. (Mus.) A composition for eight parts, usually for eight solo instruments or voices.
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2. A group of eight singers or eight musicians.
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Octic
Oc"tic (?), a. [Octo- + -ic.] (Math.) Of the eighth degree or order. -- n. (Alg.) A quantic of the eighth degree.
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Octile
Oc"tile (?), n. [Cf. F. octil, a. See Octant.] Same as Octant, 2. [R.]
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Octillion
Oc*til"lion (?), n. [L. octo eight + -illion, as in E. million: cf. F. octillion.] According to the French method of numeration (which method is followed also in the United States) the number expressed by a unit with twenty-seven ciphers annexed. According to the English method, the number expressed by a unit with forty-eight ciphers annexed. See Numeration.
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Octa-
Octo-
{ Oc"to- (?), Oc"ta- (?) }. [L. octo eight, Gr. 'oktw`, with a combining form 'okta-. Cf. Eight.] A combining form meaning eight; as in octodecimal, octolocular.
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Octoate
Oc"to*ate (?), n. (Chem.) A salt of an octoic acid; a caprylate.
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October
Oc*to"ber (?), n. [L., the eighth month of the primitive Roman year, which began in March, fr. octo eight: cf. F. Octobre. See Octave.] 1. The tenth month of the year, containing thirty-one days.
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2. Ale or cider made in that month.
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The country gentlemen had a posset or drink they called October. Emerson.
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Octocera
Oc*toc"e*ra (?), n. pl. [NL.] Octocerata.
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Octocerata
Oc`to*cer"a*ta (?), n. pl. [NL., fr. Gr. 'oktw` eight + &unr_;, a horn.] (Zool.) A suborder of Cephalopoda including Octopus, Argonauta, and allied genera, having eight arms around the head; -- called also Octopoda.
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Octochord
Oc"to*chord (?), n. (Mus.) See Octachord.
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Octodecimo
Oc`todec"i*mo (?), a. [L. octodecim eighteen. See Octavo, Decimal, and -mo.] Having eighteen leaves to a sheet; as, an octodecimo form, book, leaf, size, etc.
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Octodecimo
Oc`to*dec"i*mo, n.; pl. Octodecimos (&unr_;). A book composed of sheets each of which is folded into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded; -- usually written 18mo or 18°, and called eighteenmo.
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Octodentate
Oc`to*den"tate (?), a. [Octo- + dentate.] Having eight teeth.
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Octodont
Oc"to*dont (?), a. [Octo- + Gr. &unr_;, &unr_;.] (Zool.) Of or pertaining to the Octodontidae, a family of rodents which includes the coypu, and many other South American species.
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Octoedrical
Oc`to*ed"ric*al (?), a. See Octahedral. [Obs.] Sir T. Browne.
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Octofid
Oc"to*fid (?), a. [Octo- + root of L. findere to split: cf. F. octofide.] (Bot.) Cleft or separated into eight segments, as a calyx.
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Octogamy
Oc*tog"a*my (?), n. [Octo- + Gr. &unr_; marriage.] A marrying eight times. [R.] Chaucer.
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Octogenarian
Oc`to*ge*na"ri*an (?), n. A person eighty years, or more, of age.
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Octogenary
Oc*tog"e*na*ry (?), a. [L. octogenarius, from octogeni eighty each, octoginta eighty, fr. octo eight. See Eight, Eighty.] Of eighty years of age. “Being then octogenary.” Aubrey.
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Octogild
Oc"to*gild (?), n. [Octo- + AS. gild payment.] (Anglo-Saxon Law) A pecuniary compensation for an injury, of eight times the value of the thing.
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Octogonal
Oc*tog"o*nal (?), a. See Octagonal. [Obs.]
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Octogynia
Oc`to*gyn"i*a (?), n. pl. [NL., from Gr. 'oktw` eight + gynh` a woman, female.] (Bot.) A Linnaean order of plants having eight pistils.
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Octogynous
Octogynian
{ Oc`to*gyn"i*an (?), Oc*tog"y*nous (?), } a. (Bot.) Having eight pistils; octagynous.
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Octoic
Oc*to"ic (?), a. [See Octo-.] (Chem.) Pertaining to, derived from, or resembling, octane; -- used specifically, to designate any one of a group of acids, the most important of which is called caprylic acid.
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Octolocular
Oc`to*loc"u*lar (&obreve_;k`t&ouptack_;*l&obreve_;k"&uuptack_;*l&etilde_;r), a. [Octo- + locular.] (Bot.) Having eight cells for seeds.
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Octonaphthene
Oc`to*naph"thene (?), n. [Octo- + naphthene.] (Chem.) A colorless liquid hydrocarbon of the octylene series, occurring in Caucasian petroleum.
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Octonary
Oc`to*na*ry (?), a. [L. octonarius, fr. octoni eight each, fr. octo eight.] Of or pertaining to the number eight. Dr. H. More.
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Octonocular
Oc`to*noc"u*lar (?), a. [L. octoni eight each + E. ocular.] Having eight eyes. Derham.
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Octopede
Oc`to*pede (?), n. [Octo- + L. pes, pedis, foot.] (Zool.) An animal having eight feet, as a spider.
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Octopetalous
Oc`to*pet"al*ous (?), a. [Octo- + petal.] (Bot.) Having eight petals or flower leaves.
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Octopod
Oc"to*pod (?), n. [Gr. &unr_; eight-footed; 'oktw` eight + poy`s, podo`s, foot: cf. F. octopode.] (Zool.) One of the Octocerata.
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Octopoda
Oc*top"o*da (?), n. pl. [NL.] (Zool.) (a) Same as Octocerata. (b) Same as Arachnida.
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Octopodia
Oc`to*po"di*a (?), n. pl. [NL., fr. Gr. 'oktw` eight + &unr_; a little foot.] (Zool.) Same as Octocerata.
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Octopus
Oc"to*pus (?), n. [NL. See Octopod.] 1. (Zool.) A genus of eight-armed cephalopods, including numerous species, some of them of large size. See Devilfish.
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2. (Zool.) Any member of the genus Octopus.
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3. (Fig.) Something resembling an octopus in having numerous controlling arms or branches that reach widely and influence many activities; -- used mostly of organizations, such as diversified corporations.
[PJC]

Octoradiated
Oc`to*ra"*di*a`ted (?), a. [Octo- + radiated.] Having eight rays.
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Octoroon
Oc`to*roon" (?), n. [L. octo eight + -roon, as in quadroon.] The offspring of a quadroon and a white person; a mestee.
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Octospermous
Oc`to*sper"mous (?), a. [Octo- + Gr. &unr_; seed.] (Bot.) Containing eight seeds.
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Octostichous
Oc*tos"ti*chous (?), a. [Octo- + Gr. sti`chos a row.] (Bot.) In eight vertical ranks, as leaves on a stem.
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Octostyle
Oc"to*style (?), a. [Octo- + Gr. &unr_; a pillar: cf. F. octostyle.] (Arch.) Having eight columns in the front; -- said of a temple or portico. The Parthenon is octostyle, but most large Greek temples are hexastyle. See Hexastyle. -- n. An octostyle portico or temple.
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Octosyllabical
Octosyllabic
{ Oc`to*syl*lab"ic (?), Oc`to*syl*lab"ic*al (?), } a. [L. octosyllabus. See Octo-, and Syllable.] Consisting of or containing eight syllables.
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Octosyllable
Oc"to*syl`la*ble (?), a. Octosyllabic.
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Octosyllable
Oc"to*syl`la*ble, n. A word of eight syllables.
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octothorpe
octothorp
oc"to*thorp, oc"to*thorpe, n. [octo- eight + thorp Etymology of thorp uncertain. (ca. 1965). See quotes below. Possibly derived from octalthorpe or octotherp (once used by the Bell System?).] A typographic symbol (#) having two vertical lines intersected by two horizontal lines. It is also called the crosshatch, hash, numeral sign and number sign; in the U. S. it is commonly called the pound sign, especially to designate the symbol as used on digital telephone dials, but this can be confusing to Europeans who think of the pound sign as the symbol for the British pound. It is commonly used as a symbol for the word number; as in #36 (meaning: number thirty-six).
[PJC]

For the following explanation, I am indebted to Michael Quinion, whose World Wide Words web site (www.quinion.com/words) is a fascinating and invaluable resource for anyone interested in words and their origins.
Anyone who has ever used a touch-tone telephone has seen the octothorpe. It's that little tic-tac-toe symbol in the lower right corner of the keypad, right across from the asterisk (which the telco folks, in their infinite wisdom, insist on calling a "star"). According to a Bell Laboratories engineer named Ralph Carlsen, the octothorpe and asterisk keys were developed in the early 1960s and originally intended to be used only to access computer systems via a telephone line. The octothorpe symbol itself had already existed for many years, although it was usually called a "pound sign" or "number sign" because it was often used in commerce to designate weight or quantity.
According to Ralph Carlsen, a fellow Bell Labs engineer named Don MacPherson invented the term "octothorpe" when faced with the task of explaining the new touch-tone phones to corporate users. MacPherson chose "octo" (Latin for "eight") because there were eight points on the symbol.
"Thorpe" is indeed an Old Norse word meaning "village," often found in the names of English towns, but that was evidently not the source in this case. According to Carlsen, "thorpe" was chosen because at the time MacPherson was involved in a campaign pressing for the return of legendary athlete Jim Thorpe's Olympic medals from Sweden..

Word Detective (http://www.word-detective.com/072999.html#octothorpe [accessed 20090708]
[PJC]

octothorp


Otherwise known as the numeral sign. It has also been used as a symbol for the pound avoirdupois, but this usage is now archaic. In cartography, it is also a symbol for village: eight fields around a central square, and this is the source of its name. Octothorp means eight fields.
Robert Bringhurst (The Elements of Typographic Style (2d edition, 1996), Hartley & Marks, Publishers, Point Roberts, WA; Vancouver, BC, Canada, p. 282)
[Joel Neely]

Octoyl
Oc"to*yl (&unr_;), n. [Octoic + -yl.] (Chem.) A hypothetical radical (C7H15.CO.), regarded as the essential residue of octoic acid.
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Octroi
Oc`troi" (?), n. [F.] 1. A privilege granted by the sovereign authority, as the exclusive right of trade granted to a guild or society; a concession.
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2. A tax levied in money or kind at the gate of a French city on articles brought within the walls.
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[Written also octroy.]
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Octuor
Oc"tu*or (?), n. [From L. octo eight + -uor, as in L. quatuor.] (Mus.) See Octet. [R.]
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Octuple
Oc"tu*ple (?), a. [L. octuplus; cf. Gr. &unr_;: cf. F. octuple.] Eightfold.
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Octyl
Oc"tyl (?), n. [Octane + -yl.] (Chem.) A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol.
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Octylene
Oc"tyl*ene (?), n. [Octane + ethylene.] (Chem.) Any one of a series of metameric hydrocarbons (C8H16) of the ethylene series. In general they are combustible, colorless liquids.
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Octylic
Oc*tyl"ic (?), a. (Chem.) Pertaining to, derived from, or containing, octyl; as, octylic ether.
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Ocular
Oc"u*lar (?), a. [L. ocularis, ocularius, fr. oculus the eye: cf. F. oculaire. See Eye, and cf. Antler, Inveigle.] 1. Depending on, or perceived by, the eye; received by actual sight; personally seeing or having seen; as, ocular proof. Shak.
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Thomas was an ocular witness of Christ's death. South.
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2. (Anat.) Of or pertaining to the eye; optic.
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Ocular
Oc"u*lar, n. (Opt.) The eyepiece of an optical instrument, as of a telescope or microscope.
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Ocularly
Oc"u*lar*ly, adv. By the eye, or by actual sight.
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Oculary
Oc"u*la*ry (?), a. Of or pertaining to the eye; ocular; optic; as, oculary medicines. Holland.
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Oculated
Oculate
{ Oc"u*late (?), Oc"u*la`ted (?), } a. [L. oculatus, fr. oculus eye.] 1. Furnished with eyes.
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2. Having spots or holes resembling eyes; ocellated.
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Oculiform
Oc`u*li*form (?), a. [L. oculus the eye + form: cf. F. oculiforme.] In the form of an eye; resembling an eye; as, an oculiform pebble.
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Oculina
Oc`u*li"na (?), prop. n. [NL., fr. L. oculus the eye.] (Zool.) A genus of tropical corals, usually branched, and having a very volid texture.
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Oculinacea
Oc`u*li*na"*ce*a (?), prop. n. pl. [NL., fr. NL. oculina the name of a typical genus.] (Zool.) A suborder of corals including many reef-building species, having round, starlike calicles.
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Oculist
Oc"u*list (?), n. [L. oculus the eye: cf. F. oculiste.] One skilled in treating diseases of the eye.
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Oculo-
Oc"u*lo- (?). A combining form from L. oculus the eye.
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Oculomotor
Oc`u*lo*mo"tor (?), a. [Oculo- + motor.] (Anat.) Of or pertaining to the movement of the eye; -- applied especially to the common motor nerves (or third pair of cranial nerves) which supply many of the muscles of the orbit. -- n. The oculomotor nerve.
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Oculonasal
Oc`u*lo*na"sal (?), a. [Oculo- + nasal.] (Anat.) Of or pertaining to the region of the eye and the nose; as, the oculonasal, or nasal, nerve, one of the branches of the ophthalmic.
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Oculus
Oc"u*lus (?), n.; pl. Oculi (#). [L., an eye.] 1. An eye.
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2. (Arch.) A round window, usually a small one.
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3. (Bot.) A leaf bud.
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Ocypodian
O`cy*po"di*an, n. [Gr. 'wky`s swift + poy`s, podo`s, foot.] (Zool.) One of a tribe of crabs which live in holes in the sand along the seashore, and run very rapidly, -- whence the name.
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Od
Od (?), n. [G., fr. Gr. &unr_; passage.] (Physics) An alleged force or natural power, supposed, by Reichenbach and others, to produce the phenomena of mesmerism, and to be developed by various agencies, as by magnets, heat, light, chemical or vital action, etc.; -- called also odyle or the odylic force. [Archaic]
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That od force of German Reichenbach
Which still, from female finger tips, burnt blue.
Mrs. Browning.
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Odal
O"dal (?), n. [Cf. Icel. ē&unr_;al, Dan. odel allodial, Sw. odal.] (Law) Among the early and medieval Teutonic peoples, esp. Scandinavians, the heritable land held by the various odalmen constituting a family or kindred of freeborn tribesmen; also, the ownership of such land. The odal was subject only to certain rights of the family or kindred in restricting the freedom of transfer or sale and giving certain rights of redemption in case of change of ownership by inheritance, etc., and perhaps to other rights of the kindred or the tribe. Survivals of the early odal estates and tenure exist in Orkney and Shetland, where it is usually called by the variant form udal.
[Webster 1913 Suppl.]

Odal
O"dal, a. (Law) Noting, or pert. to, odal land or ownership.
[Webster 1913 Suppl.]

Odalisque
O`da`lisque" (?), n. [F., fr. Turk. odaliq chambermaid, fr. oda chamber, room.] A female slave or concubine in the harem of the Turkish sultan. [Written also odahlic, odalisk, and odalik.]
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Not of those that men desire, sleek
Odalisques, or oracles of mode.
Tennyson.
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Odalwoman
Odalman
{ O"dal*man (?), O"dal*wom`an (?) }, n. (Teut. Law) A man or woman having odal, or able to share in it by inheritance.
[Webster 1913 Suppl.]

Odd
Odd (&obreve_;d), a. [Compar. Odder (&obreve_;d"&etilde_;r); superl. Oddest.] [OE. odde, fr. Icel. oddi a tongue of land, a triangle, an odd number (from the third or odd angle, or point, of a triangle), orig., a point, tip; akin to Icel. oddr point, point of a weapon, Sw. udda odd, udd point, Dan. od, AS. ord, OHG. ort, G. ort place (cf. E. point, for change of meaning).] 1. Not paired with another, or remaining over after a pairing; without a mate; unmatched; single; as, an odd shoe; an odd glove.
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2. Not divisible by 2 without a remainder; not capable of being evenly paired, one unit with another; as, 1, 3, 7, 9, 11, etc., are odd numbers.
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I hope good luck lies in odd numbers. Shak.
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3. Left over after a definite round number has been taken or mentioned; indefinitely, but not greatly, exceeding a specified number; extra.
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Sixteen hundred and odd years after the earth was made, it was destroyed in a deluge. T. Burnet.
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There are yet missing of your company
Some few odd lads that you remember not.
Shak.
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4. Remaining over; unconnected; detached; fragmentary; hence, occasional; inconsiderable; as, odd jobs; odd minutes; odd trifles.
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5. Different from what is usual or common; unusual; singular; peculiar; unique; strange. “An odd action.” Shak. “An odd expression.” Thackeray.
Syn. -- extraordinary; queer.
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The odd man, to perform all things perfectly, is, in my poor opinion, Joannes Sturmius. Ascham.
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Patients have sometimes coveted odd things. Arbuthnot.
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Locke's Essay would be a very odd book for a man to make himself master of, who would get a reputation by critical writings. Spectator.
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Syn. -- Quaint; unmatched; singular; unusual; extraordinary; strange; queer; eccentric; whimsical; fantastical; droll; comical. See Quaint.
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oddball
odd"ball` (&obreve_;d"b&asuml_;l`), n. 1. A person with an unusual or odd personality; an eccentric person. [informal]
Syn. -- eccentric, eccentric person, geek.
[WordNet 1.5]

2. Hence: Anything unusual in its class.
[PJC]

Pluto is an oddball among its eight sister planets. It's the smallest in both size and mass, and has the most elliptical orbit. It moves in a plane tilted markedly away from the other planets' orbits. Moreover, Pluto is the only planet made almost entirely of ice. Ron Cohen (Science News, Feb. 27, 1999, p. 139)

oddball
odd"ball` (&obreve_;d"b&asuml_;l`), a. Eccentric; very unusual; strange; bizarre; as, an oddball request. [informal]
[PJC]

Odd Fellow
Odd" Fel`low (?). A member of a secret order, or fraternity, styled the Independent Order of Odd Fellows, established for mutual aid and social enjoyment.
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oddity
odd"i*ty (&obreve_;d"&ibreve_;*t&ybreve_;), n.; pl. Oddities (&obreve_;d"&ibreve_;*t&ibreve_;z). 1. The quality or state of being odd; singularity; queerness; peculiarity; as, oddity of dress, manners, and the like.
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That infinitude of oddities in him. Sterne.
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2. That which is odd; as, a collection of oddities.
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odd-job
odd-job adj. varied and irregularly performed; -- of paid labor; as, he found only odd-job employment. [prenominal]
[WordNet 1.5]

Oddly
Odd"ly, adv. 1. In an odd manner; unevenly. [R.]
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2. In a peculiar manner; strangely; queerly; curiously. “A figure a little more oddly turned.” Locke.
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A great black substance, . . . very oddly shaped. Swift.
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3. (Math.) In a manner measured by an odd number.
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Oddment
Odd"ment (?), n. [Odd + -ment.] An odd thing, or one that is left over, disconnected, fragmentary, or the like; something that is separated or disconnected from its fellows; Specif.: (Printing) Any separate small part or page in a book, other than the text, such as the title page, contents, etc.

A miscellaneous collection of riddles, charms, gnomic verses, and “oddments” of different kinds. Saintsbury.
[Webster 1913 Suppl.]

2. A piece of cloth that is left over after the rest has been used or sold.
Syn. -- end, remainder, remnant, scrap.
[WordNet 1.5]

3. Something unusual, and perhaps worthy of collecting.
Syn. -- curio, curiosity, oddity, peculiarity, rarity, collectible.
[WordNet 1.5]

4. pl. Odds and ends; a motley assortment of things.
Syn. -- odds and ends, melange, farrago, ragbag, hodgepodge, hotchpotch, omnium-gatherum.
[WordNet 1.5]

Oddness
Odd"ness, n. 1. The state of being odd, or not even.
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Take but one from three, and you not only destroy the oddness, but also the essence of that number. Fotherby.
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2. Singularity; strangeness; eccentricity; irregularity; uncouthness; as, the oddness of dress or shape; the oddness of an event. Young.
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odd-pinnate
odd-pinnate adj. (Bot.) Pinnate with a single leaflet at the apex; -- of a leaf shape.
Syn. -- imparipinnate.
[WordNet 1.5]

Odds
Odds (&obreve_;dz), n. sing. & pl. [See Odd, a.] 1. Difference in favor of one and against another; excess of one of two things or numbers over the other; inequality; advantage; superiority; hence, excess of chances; probability. The odds are often expressed by a ratio; as, the odds are three to one that he will win, i. e. he will win three times out of four “Preeminent by so much odds.” Milton. “The fearful odds of that unequal fray.” Trench.
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The odds
Is that we scarce are men and you are gods.
Shak.
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There appeared, at least, four to one odds against them. Swift.
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All the odds between them has been the different scope . . . given to their understandings to range in. Locke.
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Judging is balancing an account and determining on which side the odds lie. Locke.
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2. Quarrel; dispute; debate; strife; -- chiefly in the phrase at odds.
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Set them into confounding odds. Shak.
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I can not speak
Any beginning to this peevish odds.
Shak.
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At odds, in dispute; at variance. “These squires at odds did fall.” Spenser. “He flashes into one gross crime or other, that sets us all at odds.” Shak. -- It is odds, it is probable; same as odds are, but no longer used. [Obs.] Jer. Taylor. -- odds are it is probable; as, odds are he will win the gold medal. -- Odds and ends, that which is left; remnants; fragments; refuse; scraps; miscellaneous articles. “My brain is filled . . . with all kinds of odds and ends.” W. Irving. -- slim odds low odds; poor chances; as, there are slim odds he will win any medal.
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Ode
Ode (ōd), n. [F., fr. L. ode, oda, Gr. 'w,dh` a song, especially a lyric song, contr. fr. 'aoidh`, fr. 'aei`dein to sing; cf. Skr. vad to speak, sing. Cf. Comedy, Melody, Monody.] A short poetical composition proper to be set to music or sung; a lyric poem; esp., now, a poem characterized by sustained noble sentiment and appropriate dignity of style.
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Hangs odes upon hawthorns and elegies on brambles. Shak.
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O! run; prevent them with thy humble ode,
And lay it lowly at his blessed feet.
Milton.
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Ode factor, one who makes, or who traffics in, odes; -- used contemptuously.
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Odelet
Ode"let (?), n. A little or short ode.
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Odelsthing
O"dels*thing (?), n. [Norw. odel odal + ting parliament.] The lower house of the Norwegian Storthing. See Legislature.
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Odeon
O*de"on (?), n. [NL., fr. Gr. &unr_;, fr. &unr_;: cf. F. odéon. See Ode.] A kind of theater in ancient Greece, smaller than the dramatic theater and roofed over, in which poets and musicians submitted their works to the approval of the public, and contended for prizes; -- hence, in modern usage, the name of a hall for musical or dramatic performances.
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Odeum
O*de"um (?), n. [L.] See Odeon.
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Odible
O"di*ble (?), a. [L. odibilis. See Odium.] Fitted to excite hatred; hateful; odious. [Obs.] Bale.
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Odic
Od"ic (?), a. Of or pertaining to od. See Od. [Archaic] -- Od"ic*al*ly (#), adv.
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Odin
O"din (?), prop. n. [Icel. &unr_;; prob.akin to E. wood, a. See Wednesday.] (Northern Mythol.) The supreme deity of the Scandinavians; -- the same as Woden, of the German tribes.
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There in the Temple, carved in wood,
The image of great Odin stood.
Longfellow.
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Odinic
O*din"ic (?), a. Of or pertaining to Odin.
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Odinism
O"din*ism (?), n. Worship of Odin; broadly, the Teutonic heathenism. -- O"din*ist, n.

Odinism was valor; Christianism was humility, a nobler kind of valor. Carlyle.
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Odious
O"di*ous (?), a. [L. odiosus, from odium hatred: cf. F. odieux. See Odium.] 1. Hateful; deserving or receiving hatred; as, an odious name, system, vice. “All wickedness will be most odious.” Sprat.
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He rendered himself odious to the Parliament. Clarendon.
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2. Causing or provoking hatred, repugnance, or disgust; offensive; disagreeable; repulsive; as, an odious sight; an odious smell. Milton.
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The odious side of that polity. Macaulay.
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Syn. -- Hateful; detestable; abominable; disgusting; loathsome; invidious; repulsive; forbidding; unpopular.
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-- O"di*ous`ly. adv. -- O"di*ous*ness, n.
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Odist
Od"ist (?), n. A writer of an ode or odes.
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Odium
O"di*um (ō"d&ibreve_;*ŭm), n. [L., fr. odi I hate. Cf. Annoy, Noisome.] 1. Intense hatred or dislike; loathing; abhorrence.
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2. The quality that provokes hatred; offensiveness.
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She threw the odium of the fact on me. Dryden.
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3. The state of being intensely hated as the result of some despicable action; opprobrium; disrepute; discredit; reproach mingled with contempt; as, his conduct brought him into odium, or, brought odium upon him.
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Odium theologicum (&unr_;) [L.], the enmity peculiar to contending theologians.
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Syn. -- Hatred; abhorrence; detestation; antipathy. -- Odium, Hatred. We exercise hatred; we endure odium. The former has an active sense, the latter a passive one. We speak of having a hatred for a man, but not of having an odium toward him. A tyrant incurs odium. The odium of an offense may sometimes fall unjustly upon one who is innocent.
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I wish I had a cause to seek him there,
To oppose his hatred fully.
Shak.
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You have . . . dexterously thrown some of the odium of your polity upon that middle class which you despise. Beaconsfield.
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Odize
Od"ize (ōd"īz or &obreve_;d"īz), v. t. [imp. & p. p. Odized (ōd"īzd or &obreve_;d"īzd); p. pr. & vb. n. Odizing.] To charge with od. See Od. [Archaic]
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Odmyl
Od"myl (&obreve_;d"m&ibreve_;l), n. [Gr. "odmh`, "osmh`, stench + -yl.] (Chem.) A volatile liquid obtained by boiling sulphur with linseed oil. It has an unpleasant garlic odor.
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Odocoileus
Odocoileus prop. n. A genus of North American deer.
Syn. -- genus Odocoileus.
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odograph
o"do*graph (?), n. [Gr. "odo`s way + -graph.] 1. A machine for registering the distance traversed by a vehicle or pedestrain.
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2. A device for recording the length and rapidity of stride and the number of steps taken by a walker.
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odometer
o*dom"e*ter (&ouptack_;*d&obreve_;m"&euptack_;*t&etilde_;r), n. [Gr. "odo`metron, "odo`metros, an instrument for measuring distance; "odo`s way + me`tron measure: cf. F. odométre, hodométre. See also hodometer.] An instrument attached to a vehicle or connected, as by a flexible cable, to the wheel of a vehicle, which measures the distance traversed.
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2. A hodometer.
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odometrical
o`do*met"ric*al (ō`d&ouptack_;*m&ebreve_;t"r&ibreve_;*k&aitalic_;l), a. [Cf. F. odométrique, hodométrique.] Of or pertaining to the odometer, or to measurements made with it.
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Odometrous
O*dom"e*trous (?), a. Serving to measure distance on a road. [R.] Sydney Smith.
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Odometry
O*dom"e*try (?), n. Measurement of distances by the odometer.
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Odonata
O*don"a*ta (?), n. pl. [NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth.] (Zool.) The division of insects that includes the dragon flies.
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Odontalgia
O`don*tal"gi*a (?), n. [NL., fr. Gr. &unr_;; 'odoy`s, 'odo`ntos, a tooth + 'a`lgos pain.] (Med.) Toothache.
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Odontalgic
O`don*tal"gic (?), a. [Cf. F. odontalgique.] Of or pertaining to odontalgia. -- n. A remedy for the toothache.
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Odontalgy
O`don*tal"gy (?), n. (Med.) Same as Odontalgia.
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Odontiasis
O`don*ti"a*sis (?), n. [NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth.] Cutting of the teeth; dentition.
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Odonto-
O*don"to- (?). A combining form from Gr. 'odoy`s, 'odo`ntos, a tooth.
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Odontoblast
O*don"to*blast (?), n. [Odonto- + -blast.]
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1. (Anat.) One of the more or less columnar cells on the outer surface of the pulp of a tooth; an odontoplast. They are supposed to be connected with the formation of dentine.
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2. (Zool.) One of the cells which secrete the chitinous teeth of Mollusca.
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Odontocete
O*don`to*ce"te (&ouptack_;*d&obreve_;n`t&ouptack_;*sē"t&euptack_;), n. pl. [NL., from Gr. 'odoy`s, 'odo`ntos, a tooth + kh^tos a whale.] (Zool.) A subdivision of Cetacea, including the sperm whale, dolphins, etc.; the toothed whales.
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Odontogeny
O`don*tog"e*ny (ō`d&obreve_;n*t&obreve_;j"&euptack_;*n&ybreve_;), n. [Odonto- + root of Gr. gi`gnesqai to be born: cf: F. odontogénie.] (Physiol.) Generation, or mode of development, of the teeth.
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Odontograph
O*don"to*graph (?), n. [Odonto- + -graph.] An instrument for marking or laying off the outlines of teeth of gear wheels.
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Odontographic
O*don`to*graph"ic (?), a. Of or pertaining to odontography.
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Odontography
O`don*tog"ra*phy (?), n. A description of the teeth.
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Odontoid
O*don"toid (?), a. [Gr. &unr_;; 'odoy`s, 'odo`ntos, a tooth + e'i^dos form: cf. F. odontoïde.] (Anat.) (a) Having the form of a tooth; toothlike. (b) Of or pertaining to the odontoid bone or to the odontoid process.
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Odontoid bone (Anat.), a separate bone, in many reptiles, corresponding to the odontoid process. -- Odontoid process, or Odontoid peg (Anat.), the anterior process of the centrum of the second vertebra, or axis, in birds and mammals. See Axis.
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Odontolcae
O`don*tol"cae (?), prop. n. pl. [NL., from Gr. 'odoy`s, 'odo`ntos, a tooth + &unr_; a furrow.] (Paleon.) An extinct order of ostrichlike aquatic birds having teeth, which are set in a groove in the jaw. It includes Hesperornis, and allied genera. See Hesperornis. [Written also Odontholcae, and Odontoholcae.]
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Odontolite
O*don"to*lite (?), n. [Odonto- + -lite.] (Min.) A fossil tooth colored a bright blue by phosphate of iron. It is used as an imitation of turquoise, and hence called bone turquoise.
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Odontology
O`don*tol"o*gy (?), n. [Odonto- + -logy: cf. F. odontologie.] The science which treats of the teeth, their structure and development.
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Odontophora
O`don*toph"o*ra (?), n. pl. [NL. See Odontophore.] (Zool.) Same as Cephalophora.
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Odontophore
O*don"to*phore (?), n. [Odonto- + Gr. fe`rein to bear.] (Zool.) A special structure found in the mouth of most mollusks, except bivalves. It consists of several muscles and a cartilage which supports a chitinous radula, or lingual ribbon, armed with teeth. Also applied to the radula alone. See Radula.
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Odontophorous
O`don*toph"o*rous (?), a. (Zool.) Having an odontophore.
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Odontoplast
O*don"to*plast (?), n. [Odonto- + Gr. pla`ssein to form, mold.] (Anat.) An odontoblast.
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Odontopteryx
O`don*top"te*ryx (?), n. [NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth + pte`ryx a wing.] (Paleon.) An extinct Eocene bird having the jaws strongly serrated, or dentated, but destitute of true teeth. It was found near London.
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Odontornithes
O*don`tor*ni*"thes (?), n. pl. [NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth + &unr_;, &unr_;, a bird.] (Paleon.) A group of Mesozoic birds having the jaws armed with teeth, as in most other vertebrates. They have been divided into three orders: Odontolcae, Odontotormae, and Saururae.
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Odontostomatous
O*don"to*stom"a*tous (?), a. [Odonto- + Gr. &unr_;, &unr_;, the mouth.] (Zool.) Having toothlike mandibles; -- applied to certain insects.
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Odontotormae
O*don`to*tor"mae (?), n.pl. [NL., fr. 'odoy`s, 'odo`ntos, a tooth + &unr_; a socket.] (Paleon.) An order of extinct toothed birds having the teeth in sockets, as in the genus Ichthyornis. See Ichthyornis.
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Odor
O"dor (ō"d&etilde_;r), n. [OE. odor, odour, OF. odor, odour, F. odeur, fr. L. odor; akin to olere to smell, Gr. 'o`zein, Lith. ůsti. Cf. Olfactory, Osmium, Ozone, Redolent.] [Written also odour.] Any smell, whether fragrant or offensive; scent; perfume.
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Meseemed I smelt a garden of sweet flowers,
That dainty odors from them threw around.
Spenser.
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To be in bad odor, to be out of favor, or in bad repute.
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Odorament
O"dor*a*ment (?), n. [L. odoramentum. See Odorate.] A perfume; a strong scent. [Obs.] Burton.
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Odorant
O"dor*ant (?), a. [L. odorans, -antis, p. pr.] Yielding odors; fragrant. Holland.
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odorant
o"dor*ant (?), n. An odorous substance; especially, a substance with a strong odor added to a dangerous substance, such as natural gas, to provide an easy detection method and a warning; as, ethyl mercaptan is used as an odorant in natural gas and propane to facilitate detection of leaks.
[PJC]

Odorate
O"dor*ate (?), a. [L. odoratus, p. p. of odorare to perfume, fr. odor odor.] Odorous. [Obos.] Bacon.
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Odorating
O"dor*a`ting (?), a. Diffusing odor or scent; fragrant.
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Odoriferous
O`dor*if"er*ous (?), a. [L. odorifer; odor odor + ferre to bear. See Odoe, and 1st Bear.] Bearing or yielding an odor; perfumed; usually, sweet of scent; fragrant; as, odoriferous spices, particles, fumes, breezes. Milton.
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-- O`dor*if"er*ous*ly, adv. --O`dor*if"er*ous*ness, n.
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Odorine
O"dor*ine (?), n. (Chem.) A pungent oily substance obtained by redistilling bone oil. [Obs.]
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Odorless
O"dor*less, a. Free from odor.
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Odorous
O"dor*ous (?), a. [Written also odourous.] [L. odorus, fr. odor odor: cf. OF. odoros, odoreux.] Having or emitting an odor or scent, esp. a sweet odor; fragrant; sweet-smelling.Odorous bloom.” Keble.
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Such fragrant flowers do give most odorous smell. Spenser.
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-- O"dor*ous*ly, adv. -- O"dor*ous*ness, n.
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Ods
Ods (?), interj. A corruption of God's; -- formerly used in oaths and ejaculatory phrases.Ods bodikin.” “Ods pity.” Shak.
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Odyle
Odyl
{ Od"yl, Od"yle } (?), n. [Gr. &unr_;, passage + &unr_; matter or material.] (Physics) See Od. [Archaic].
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Odylic
O*dyl"ic (?), a. (Physics) Of or pertaining to odyle; odic; as, odylic force. [Archaic]
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Odyssey
Od"ys*sey (&obreve_;d"&ibreve_;s*s&ybreve_;), n. [L. Odyssea, Gr. 'Ody`sseia, fr. 'Odyssey`s Ulysses: cf. F. Odyssée.] An epic poem attributed to Homer, which describes the return of Ulysses to Ithaca after the siege of Troy.
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OE
Œ (ē), A diphthong, employed in the Latin language, and thence in the English language, as the representative of the Greek diphthong oi. In many words in common use, e alone stands instead of œ. Classicists prefer to write the diphthong oe separate in Latin words.
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oecoid
oe"coid (ē"koid), n. [Gr. o'i^kos a house + -oid.] (Anat.) The colorless porous framework, or stroma, of red blood corpuscles from which the zooid, or hemoglobin and other substances of the corpuscles, may be dissolved out.
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oecology
oe*col"o*gy (&euptack_;*k&obreve_;l"&ouptack_;*j&ybreve_;), n. [Gr. o'i^kos house + -logy.] (Biol.) The various relations of animals and plants to one another and to the outer world; -- now more commonly spelled ecology. [Also spelled ecology.]
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oeconomical
oe`co*nom"ic*al (?), a. See Economical.
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oeconomics
oe`co*nom"ics (?), n. See Economics.
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oeconomy
oe*con"o*my (?), n. See Economy.
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oecumenical
oec`u*men"ic*al (?), a. See Ecumenical.
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oedema
oe*de"ma (?), n. [NL., from Gr. &unr_; a swelling, tumor, fr. &unr_; to swell.] (Med.) A swelling from effusion of watery fluid in the cellular tissue beneath the skin or mucous membrance; dropsy of the subcutaneous cellular tissue. [Written also edema.]
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oedematous
oe*dem"a*tous (?), a. (Med.) Pertaining to, or of the nature of, edema; affected with edema.
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oeil-de-boeuf
oeil`-de-boeuf" (?), n.; pl. oeils-de-boeuf (#). [F., lit., eye of an ox.] (Arch.) A circular or oval window; -- generally used of architecture of the 17th and 18th centuries. A famous room in the palace of Versailles bears this name, from the oval window opening into it.
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oeil-de-perdrix
oeil`-de-per`drix" (?), a. [F., lit., eye of a partridge.] 1. (Ornamental Art) Characterized by, or decorated with, small round points, spots, or rings; as, oeil-de-perdrix pattern.
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2. Having a brownish red color; -- used esp. of light-colored red wine.
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oeillade
oeiliad
{ oe*il"iad (&euptack_;*&ibreve_;l"y&aitalic_;d or &ibreve_;l"y&aitalic_;d), ‖oeil"lade` (&etilde_;"y&adot_;d`), } n. [F. oeillade, fr. oeel eye. See Eyelent.] A glance of the eye; an amorous look. [Obs.]
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She gave strange oeillades and most speaking looks. Shak.
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oelet
oe"let (?), n. [See Eyelet.] An eye, bud, or shoot, as of a plant; an oilet. [Obs.] Holland.
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oenanthate
oenanthate
oe*nan"thate, oe*nan"thate (?), n. (Chem.) A salt or ester of oenanthic acid; as, testosterone oenanthate is sold as an anabolic steroid; also called enanthate.
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oenanthic
oe*nan"thic (?), a. [Gr. &unr_; the first shoot of the vine, the vine blossom, the vine; o'i`nh the vine + &unr_; bloom, 'a`nqos flower.] (Chem.) Having, or imparting, the odor characteristic of the bouquet of wine; specifically used, formerly, to designate an acid (oenanthic acid) whose ethereal salts were supposed to occasion the peculiar bouquet, or aroma, of old wine. Cf. oenanthylic.
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oenanthic acid, oenanthic acid (Chem.), an acid (C6H13.CO.OH) obtained from œnanthic ether by the action of alkalies; called also n-heptanoic acid, 1-heptanecarboxylic acid, enanthic acid, enanthylic acid and oenanthylic acid. It has the odor of sour sweat. It has the CAS registry number 111-14-8. -- oenanthic ether, an ethereal substance (not to be confused with the bouquet, or aroma, of wine) found in wine lees, and consisting of a complex mixture of the ethereal salts of several of the higher acids of the acetic acid series. It has an ethereal odor, and it used in flavoring artificial wines and liquors. Called also oil of wine. See Essential oil, under Essential.
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oenanthol
oe*nan"thol (?), n. [oenanthylic + L. oleum oil.] (Chem.) An oily substance (C6H15.CHO) obtained by the distillation of castor oil, recognized as the aldehyde of oenanthylic acid, and hence called also oenanthaldehyde.
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oenanthone
oe*nan"thone (?), n. [oenanthic + -one] (Chem.) The ketone of oenanthic acid.
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oenanthyl
oe*nan"thyl (?), n. [oennthic + -yl.] (Chem.) A hydrocarbon radical formerly supposed to exist in oenanthic acid, now known to be identical with heptyl.
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oenanthylate
oe*nan"thyl*ate (?), n. (Chem.) A salt of oenanthylic acid; as, potassium oenanthylate.
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oenanthylic
oe`nan*thyl"ic (?), a. (Chem.) Pertaining to, derived from, or containing, oenanthyl; specifically, designating an acid formerly supposed to be identical with the acid in oenanthic ether, but now known to be identical with heptanoic acid. Oenanthylic and oenanthic are now considered as syonyms (1999).
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oenanthylidene
oe`nan*thyl"i*dene (?), n. (Chem.) A colorless liquid hydrocarbon, having a garlic odor; heptine.
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oenanthylous
oe*nan"thyl*ous (?), a. (Chem.) Of, pertaining to, or designating, an acid formerly supposed to be the acid of oenanthylic ether, but now known to be a mixture of higher acids, especially capric acid. [Obs.]
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oenocyan
oe`no*cy"an (?), n. [Gr. o'i^nos wine + ky`anos a dark-blue substance.] (Chem.) The coloring matter of red wines.
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oenology
oe*nol"o*gy (?), n. [Gr. &unr_; wine + -logy.] Knowledge of wine, scientific or practical.
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oenomania
oen`o*ma"ni*a (?), n. [NL., fr. Gr. o'i^nos wine + &unr_; mania.] (Med.) (a) Delirium tremens. Rayer. (b) Dipsomania.
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oenomel
oen"o*mel (?), n. [Gr. o'i^nos wine + &unr_; honey.] Wine mixed with honey; mead. [R.]
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oenometer
oe*nom"e*ter (?), n. [Gr. o'i^nos wine + -meter.] See Alcoholometer.
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oenophilist
oe*noph"i*list (?), n. [Gr. o'i^nos wine + &unr_; to love.] A lover of wine. [R.] Thackeray.
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oenothionic
oe`no*thi*on"ic (?), a. [Gr. o'i^nos wine + thionic.] (Chem.) Pertaining to an acid now called sulphovinic acid or ethyl sulphuric acid.
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O'er
O'er (?), prep. & adv. A contr. of Over. [Poetic]
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Oersted
Oer"sted (?), n. [After Hans Christian Oersted, Danish physicist.] (Elec.) The C. G. S. unit of magnetic reluctance or resistance, equal to the reluctance of a centimeter cube of air (or vacuum) between parallel faces. Also, a reluctance in which unit magnetomotive force sets up unit flux.
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oesophageal
oesophagus
oe*soph"a*gus, n., oe`so*phag"e*al, a., etc. Same as Esophagus, Esophageal, etc.
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oestrian
oes"tri*an (?), a. (Zool.) Of or pertaining to the gadflies. -- n. A gadfly.
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oestrual
oes"tru*al (?), a. [See oestrus.] (Physiol.) Of or pertaining to sexual desire; -- mostly applied to brute animals; as, the oestrual period; oestrual influence.
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oestruation
oes`tru*a"tion (?), n. (Physiol.) The state of being under oestrual influence, or of having sexual desire.
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oestrus
oes"trus (?), n. [L., a gadfly; also, frenzy, fr. Gr. &unr_; gadfly; hence, sting, fury, insane desire, frenzy.] 1. (Zool.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.
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2. A vehement desire.
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3. Specifically: (Physiol.) The periodical sexual impulse of animals; the period during which female animals are most receptive to males; heat; rut.
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Of
Of (&obreve_;v), prep. [AS. of of, from, off; akin to D. & OS. af, G. ab off, OHG. aba from, away, Icel., Dan., Sw., & Goth. af, L. ab, Gr. &unr_;, Skr. apa. Cf. Off, A- (2), Ab-, After, Epi-.] In a general sense, from, or out from; proceeding from; belonging to; relating to; concerning; -- used in a variety of applications; as:
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1. Denoting that from which anything proceeds; indicating origin, source, descent, and the like; as, he is of a race of kings; he is of noble blood.
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That holy thing which shall be born of thee shall be called the Son of God. Luke i. 35.
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I have received of the Lord that which also I delivered unto you. 1 Cor. xi. 23.
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2. Denoting possession or ownership, or the relation of subject to attribute; as, the apartment of the consul: the power of the king; a man of courage; the gate of heaven. “Poor of spirit.” Macaulay.
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3. Denoting the material of which anything is composed, or that which it contains; as, a throne of gold; a sword of steel; a wreath of mist; a cup of water.
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4. Denoting part of an aggregate or whole; belonging to a number or quantity mentioned; out of; from amongst; as, of this little he had some to spare; some of the mines were unproductive; most of the company.
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It is of the Lord's mercies that we are not consumed. Lam. iii. 22.
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It is a duty to communicate of those blessings we have received. Franklin.
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5. Denoting that by which a person or thing is actuated or impelled; also, the source of a purpose or action; due to; as, they went of their own will; no body can move of itself; he did it of necessity.
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For it was of the Lord to harden their hearts. Josh. xi. 20.
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6. Denoting reference to a thing; about; concerning; relating to; as, to boast of one's achievements; they talked of many things.
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Knew you of this fair work? Shak.
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7. Denoting nearness or distance, either in space or time; from; as, within a league of the town; within an hour of the appointed time.
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8. Denoting identity or equivalence; -- used with a name or appellation, and equivalent to the relation of apposition; as, the continent of America; the city of Rome; the Island of Cuba.
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9. Denoting the agent, or person by whom, or thing by which, anything is, or is done; by.
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And told to her of [by] some. Chaucer.
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He taught in their synagogues, being glorified of all. Luke iv. 15.
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[Jesus] being forty days tempted of the devil. Luke iv. 1, 2.
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&hand_; The use of the word in this sense, as applied to persons, is nearly obsolete.
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10. Denoting relation to place or time; belonging to, or connected with; as, men of Athens; the people of the Middle Ages; in the days of Herod.
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11. Denoting passage from one state to another; from. [Obs.] “O miserable of happy.” Milton.
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12. During; in the course of.
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Not be seen to wink of all the day. Shak.
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My custom always of the afternoon. Shak.
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&hand_; Of may be used in a subjective or an objective sense. “The love of God” may mean, our love for God, or God's love for us.
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&hand_; From is the primary sense of this preposition; a sense retained in off, the same word differently written for distinction. But this radical sense disappears in most of its application; as, a man of genius; a man of rare endowments; a fossil of a red color, or of an hexagonal figure; he lost all hope of relief; an affair of the cabinet; he is a man of decayed fortune; what is the price of corn? In these and similar phrases, of denotes property or possession, or a relation of some sort involving connection. These applications, however all proceeded from the same primary sense. That which proceeds from, or is produced by, a person or thing, either has had, or still has, a close connection with the same; and hence the word was applied to cases of mere connection, not involving at all the idea of separation.
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Of consequence, of importance, value, or influence. -- Of late, recently; in time not long past. -- Of old, formerly; in time long past. -- Of one's self, by one's self; without help or prompting; spontaneously.
[1913 Webster] Why, knows not Montague, that of itself
England is safe, if true within itself?
Shak.

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Off
Off (&obreve_;f; 115), adv. [OE. of, orig. the same word as R. of, prep., AS. of, adv. & prep. √194. See Of.] In a general sense, denoting from or away from; as:
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1. Denoting distance or separation; as, the house is a mile off.
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2. Denoting the action of removing or separating; separation; as, to take off the hat or cloak; to cut off, to pare off, to clip off, to peel off, to tear off, to march off, to fly off, and the like.
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3. Denoting a leaving, abandonment, departure, abatement, interruption, or remission; as, the fever goes off; the pain goes off; the game is off; all bets are off.
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4. Denoting a different direction; not on or towards: away; as, to look off.
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5. Denoting opposition or negation. [Obs.]
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The questions no way touch upon puritanism, either off or on. Bp. Sanderson.
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From off, off from; off. “A live coal . . . taken with the tongs from off the altar.” Is. vi. 6. -- Off and on. (a) Not constantly; not regularly; now and then; occasionally. (b) (Naut.) On different tacks, now toward, and now away from, the land. -- To be off. (a) To depart; to escape; as, he was off without a moment's warning. (b) To be abandoned, as an agreement or purpose; as, the bet was declared to be off. [Colloq.] -- To come off, To cut off, To fall off, To go off, etc. See under Come, Cut, Fall, Go, etc. -- To get off. (a) To utter; to discharge; as, to get off a joke. (b) To go away; to escape; as, to get off easily from a trial. [Colloq.] -- To take off To do a take-off on, To take off, to mimic, lampoon, or impersonate. -- To tell off (a) (Mil.), to divide and practice a regiment or company in the several formations, preparatory to marching to the general parade for field exercises. Farrow. (b) to rebuke (a person) for an improper action; to scold; to reprimand. -- To be well off, to be in good condition. -- To be ill off, To be badly off, to be in poor condition.
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Off
Off (&obreve_;f; 115), interj. Away; begone; -- a command to depart.
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Off
Off, prep. Not on; away from; as, to be off one's legs or off the bed; two miles off the shore. Addison.
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Off hand. See Offhand. -- Off side (Football), out of play; -- said when a player has got in front of the ball in a scrimmage, or when the ball has been last touched by one of his own side behind him. -- To be off color, (a) to be of a wrong color. (b) to be mildly obscene. -- To be off one's food or To be off one's feed, (Colloq.) to have no appetite; to be eating less than usual.
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Off
Off, a. 1. On the farther side; most distant; on the side of an animal or a team farthest from the driver when he is on foot; in the United States, the right side; as, the off horse or ox in a team, in distinction from the nigh or near horse or ox; the off leg.
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2. Designating a time when one is not strictly attentive to business or affairs, or is absent from his post, and, hence, a time when affairs are not urgent; as, he took an off day for fishing: an off year in politics. “In the off season.” Thackeray.
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3. Designating a time when one's performance is below normal; as, he had an off day.
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Off side. (a) The right hand side in driving; the farther side. See Gee. (b) (Cricket) See Off, n.
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Off
Off, n. (Cricket) The side of the field that is on the right of the wicket keeper.
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offal
of"fal (?), n. [Off + fall.] 1. The rejected or waste parts of any process, especially the inedible parts of a butchered animal, such as the viscera.
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2. A dead body; carrion. Shak.
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3. That which is thrown away as worthless or unfit for use; refuse; rubbish.
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The offals of other professions. South.
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off-and-on
off-and-on adj. discontinuous; not continuous. Opposite of continuous. [prenominal]
Syn. -- interrupted.
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off-base
off-base adj. (Mil.) located outside a military base; as, off-base housing.
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off-Broadway
off-Broadway prop. a. Of or pertaining to the professional theaters in Manhattan not in the Broadway area; performed in off-Broadway{1}.
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off-Broadway
off-Broadway prop. n. 1. A group of low-budget theaters located outside the Broadway area in Manhattan.
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2. The professional drama presented in off-Broadway theaters.
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off-centered
off-center
off-center off-centered adj. situated away from the center or axis.
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off-color
off-color adj. humorously vulgar; mildly obscene; risque; as, an off-color joke.
Syn. -- bawdy, blue, ribald.
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Offcut
Off"cut` (?), n. 1. That which is cut off.
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2. (Bookbinding) A portion of the printed sheet, in certain sizes of books, that is cut off before folding.
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off-day
off-day n. A day when things go poorly; as, I guess this is one of my off-days.
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off-duty
off-duty adj. not performing or available for duties at the given moment; as, an off-duty policeman. Oposite of on-duty, working, and on-the-job. [prenominal]
Syn. -- off duty(predicate).
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Offence
Of*fence" (?), n. See Offense.
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offenceless
offenceless adj. incapable of offending or attacking; harmless.
Syn. -- offenseless.
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Offend
Of*fend (?), v. t. [imp. & p. p. Offended; p. pr. & vb. n. Offending.] [OF. offendre, L. offendere, offensum; ob (see Ob-) + fendere (in comp.) to thrust, dash. See Defend.] 1. To strike against; to attack; to assail. [Obs.] Sir P. Sidney.
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2. To displease; to make angry; to affront.
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A brother offended is harder to be won than a strong city. Prov. xviii. 19.
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3. To be offensive to; to harm; to pain; to annoy; as, strong light offends the eye; to offend the conscience.
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4. To transgress; to violate; to sin against. [Obs.]
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Marry, sir, he hath offended the law. Shak.
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5. (Script.) To oppose or obstruct in duty; to cause to stumble; to cause to sin or to fall. [Obs.]
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Who hath you misboden or offended. Chaucer.
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If thy right eye offend thee, pluck it out . . . And if thy right hand offend thee, cut it off. Matt. v. 29, 3O.
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Great peace have they which love thy law, and nothing shall offend them. Ps. cxix. 165.
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Offend
Of*fend", v. i. 1. To transgress the moral or divine law; to commit a crime; to stumble; to sin.
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Whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. James ii. 10.
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If it be a sin to covet honor,
I am the most offending soul alive.
Shak.
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2. To cause dislike, anger, or vexation; to displease.
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I shall offend, either to detain or give it. Shak.
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To offend against, to do an injury or wrong to; to commit an offense against. “We have offended against the Lord already.” 2 Chron. xxviii. 13.
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Offendant
Of*fend"ant (?), n. An offender. [R.] Holland.
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Offender
Of*fend"er (?), n. One who offends; one who violates any law, divine or human; a wrongdoer.
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I and my son Solomon shall be counted offenders. 1 Kings i. 21.
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Offendress
Of*fend"ress (?), n. A woman who offends. Shak.
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Offence
Offense
{ Of*fense", Of*fence" } (?), n. [F., fr. L. offensa. See Offend.] 1. The act of offending in any sense; esp., a crime or a sin, an affront or an injury.
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Who was delivered for our offenses, and was raised again for our justification. Rom. iv. 25.
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I have given my opinion against the authority of two great men, but I hope without offense to their memories. Dryden.
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2. The state of being offended or displeased; anger; displeasure; as, to cause offense.
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He was content to give them just cause of offense, when they had power to make just revenge. Sir P. Sidney.
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3. A cause or occasion of stumbling or of sin. [Obs.]
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Woe to that man by whom the offense cometh! Matt. xviii. 7.
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4. In any contest, the act or process of attacking as contrasted with the act of defending; the offensive; as, to go on the offense.
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5. (Sports) The members of a team who have the primary responsibility to score goals, in contrast to those who have the responsibility to defend, i.e. to prevent the opposing team from scoring goal.
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&hand_; This word, like expense, is often spelled with a c. It ought, however, to undergo the same change with expense, the reasons being the same, namely, that s must be used in offensive as in expensive, and is found in the Latin offensio, and the French offense.
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To take offense, to feel, or assume to be, injured or affronted; to become angry or hostile. -- Weapons of offense, those which are used in attack, in distinction from those of defense, which are used to repel.
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Syn. -- Displeasure; umbrage; resentment; misdeed; misdemeanor; trespass; transgression; delinquency; fault; sin; crime; affront; indignity; outrage; insult.
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Offenseful
Of*fense"ful (?), a. Causing offense; displeasing; wrong; as, an offenseful act. [R.]
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Offenseless
Of*fense"less, a. Unoffending; inoffensive.
Syn. -- offenceless.
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Offensible
Of*fen"si*ble (?), a. That may give offense. [Obs.]
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Offension
Of*fen"sion (?), n. [OF., fr. L. offensio an offense.] Assault; attack. [Obs.] Chaucer.
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Offensive
Of*fen"sive (?), a. [Cf. F. offensif. See Offend.]
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1. Giving offense; causing displeasure or resentment; displeasing; annoying; as, offensive words.
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2. Giving pain or unpleasant sensations; disagreeable; revolting; noxious; as, an offensive smell; offensive sounds.Offensive to the stomach.” Bacon.
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3. Making the first attack; assailant; aggressive; hence, used in attacking; -- opposed to defensive; as, an offensive war; offensive weapons.
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League offensive and defensive, a leaque that requires all the parties to it to make war together against any foe, and to defend one another if attacked.
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Syn. -- Displeasing; disagreeable; distasteful; obnoxious; abhorrent; disgusting; impertinent; rude; saucy; reproachful; opprobrious; insulting; insolent; abusive; scurrilous; assailant; attacking; invading.
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-- Of*fen"sive*ly, adv. -- Of*fen"sive*ness, n.
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Offensive
Of*fen"sive (?), n. The state or posture of one who offends or makes attack; aggressive attitude; the act of the attacking party; -- opposed to defensive.
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To take the offensive, To act on the offensive, To go on the offensive, to be the attacking party; to initiate hostilities.
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Offer
Of"fer (?), v. t. [imp. & p. p. Offered (?); p. pr. & vb. n. Offering.] [OE. offren, AS. offrian to sacrifice, fr. L. offerre; ob (see OB-) + ferre to bear, bring. The English word was influenced by F. offrir to offer, of the same origin. See 1st Bear.] 1. To present, as an act of worship; to immolate; to sacrifice; to present in prayer or devotion; -- often with up.
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Thou shalt offer every day a bullock for a sin offering for atonement. Ex. xxix. 36.
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A holy priesthood to offer up spiritual sacrifices. 1 Pet. ii. 5.
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2. To bring to or before; to hold out to; to present for acceptance or rejection; as, to offer a present, or a bribe; to offer one's self in marriage.
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I offer thee three things. 2 Sam. xxiv. 12.
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3. To present in words; to proffer; to make a proposal of; to suggest; as, to offer an opinion. With the infinitive as an objective: To make an offer; to declare one's willingness; as, he offered to help me.
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4. To attempt; to undertake.
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All that offer to defend him. Shak.
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5. To bid, as a price, reward, or wages; as, to offer a guinea for a ring; to offer a salary or reward.
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6. To put in opposition to; to manifest in an offensive way; to threaten; as, to offer violence, attack, etc.
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Syn. -- To propose; propound; move; proffer; tender; sacrifice; immolate.
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Offer
Of"fer, v. i. 1. To present itself; to be at hand.
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The occasion offers, and the youth complies. Dryden.
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2. To make an attempt; to make an essay or a trial; -- used with at. “Without offering at any other remedy.” Swift.
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He would be offering at the shepherd's voice. L'Estrange.
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I will not offer at that I can not master. Bacon.
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Offer
Of"fer (?), n. [Cf. F. offre, fr. offrir to offer, fr. L. offerre. See Offer, v. t.] 1. The act of offering, bringing forward, proposing, or bidding; a proffer; a first advance. “This offer comes from mercy.” Shak.
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2. That which is offered or brought forward; a proposal to be accepted or rejected; a sum offered; a bid.
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When offers are disdained, and love denied. Pope.
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3. Attempt; endeavor; essay; as, he made an offer to catch the ball. “Some offer and attempt.” South.
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Offerable
Of"fer*a*ble (?), a. Capable of being offered; suitable or worthy to be offered.
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Offerer
Of"fer*er (?), n. One who offers; esp., one who offers something to God in worship. Hooker.
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Offering
Of"fer*ing, n. 1. The act of an offerer; a proffering.
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2. That which is offered, esp. in divine service; that which is presented as an expiation or atonement for sin, or as a free gift; a sacrifice; an oblation; as, sin offering.
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They are polluted offerings more abhorred
Than spotted livers in the sacrifice.
Shak.
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3. A sum of money offered, as in church service; as, a missionary offering. Specif.: (Ch. of Eng.) Personal tithes payable according to custom, either at certain seasons as Christmas or Easter, or on certain occasions as marriages or christenings.
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[None] to the offering before her should go. Chaucer.
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Burnt offering, Drink offering, etc. See under Burnt. etc.
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Offertory
Of"fer*to*ry (?), n.; pl. Offertories . [L. offertorium the place to which offerings were brought, in LL. offertory: cf. F. offertoire.] 1. The act of offering, or the thing offered. [Obs. or R.] Bacon. Bp. Fell.
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2. (R. C. Ch.) (a) An anthem chanted, or a voluntary played on the organ, during the offering and first part of the Mass. (b) That part of the Mass which the priest reads before uncovering the chalice to offer up the elements for consecration. (c) The oblation of the elements.
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3. (Ch. of Eng. & Prot. Epis. Ch.) (a) The Scripture sentences said or sung during the collection of the offerings. (b) The offerings themselves.
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Offerture
Of"fer*ture (?), n. [LL. offertura an offering.] Offer; proposal; overture. [Obs.]
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More offertures and advantages to his crown. Milton.
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off-guard
off-guard pred. adj. not watching for possible danger; not alert; as, caught in an off-guard moment.
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Offhand
Off"hand` (?), a. Instant; unprepared; ready; extemporaneous; unrehearsed; as, an offhand speech; offhand excuses; an offhand comment. -- adv. In an offhand manner; as, he replied offhand.
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offhanded
offhanded adj. 1. same as offhand and off-the-cuff.
Syn. -- ad-lib, extemporaneous, extemporary, extempore, offhand, off-the-cuff, unpremeditated, unrehearsed.
[WordNet 1.5]

2. Without, or seeming to be without, plan or method; casual.
Syn. -- casual, offhand.
[WordNet 1.5]

Office
Of"fice (?), n. [F., fr. L. officium, for opificium; ops ability, wealth, help + facere to do or make. See Opulent, Fact.] 1. That which a person does, either voluntarily or by appointment, for, or with reference to, others; customary duty, or a duty that arises from the relations of man to man; as, kind offices, pious offices.
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I would I could do a good office between you. Shak.
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2. A special duty, trust, charge, or position, conferred by authority and for a public purpose; a position of trust or authority; as, an executive or judical office; a municipal office.
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3. A charge or trust, of a sacred nature, conferred by God himself; as, the office of a priest under the old dispensation, and that of the apostles in the new.
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Inasmuch as I am the apostle of the Gentiles, I magnify mine office. Rom. xi. 13.
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4. That which is performed, intended, or assigned to be done, by a particular thing, or that which anything is fitted to perform; a function; -- answering to duty in intelligent beings.
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They [the eyes] resign their office and their light. Shak.
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Hesperus, whose office is to bring
Twilight upon the earth.
Milton.
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In this experiment the several intervals of the teeth of the comb do the office of so many prisms. Sir I. Newton.
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5. The place where any kind of business or service for others is transacted; a building, suite of rooms, or room in which public officers or workers in any organization transact business; as, the register's office; a lawyer's office; the doctor's office; the Mayor's office.
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6. The company or corporation, or persons collectively, whose place of business is in an office; as, I have notified the office.
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7. pl. The apartments or outhouses in which the domestics discharge the duties attached to the service of a house, as kitchens, pantries, stables, etc. [Eng.]
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As for the offices, let them stand at distance. Bacon.
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8. (Eccl.) Any service other than that of ordination and the Mass; any prescribed religious service.
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This morning was read in the church, after the office was done, the declaration setting forth the late conspiracy against the king's person. Evelyn.
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Holy office. Same as Inquisition, n., 3. -- Houses of office. Same as def. 7 above. Chaucer. -- Little office (R. C. Ch.), an office recited in honor of the Virgin Mary. -- Office bearer, an officer; one who has a specific office or duty to perform. -- Office copy (Law), an authenticated or certified copy of a record, from the proper office. See Certified copies, under Copy. Abbott. -- Office-found (Law), the finding of an inquest of office. See under Inquest. -- Office holder. See Officeholder in the Vocabulary -- Office hours. the hours of the day during which business is transacted at an office{5}. -- Office seeker. a person who is attempting to get elected to an elected office, or to get an appointment to an appointive public office.
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Office
Of`fice (?), v. t. To perform, as the duties of an office; to discharge. [Obs.] Shak.
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office-bearer
office-bearer n. A person who holds an office; an officeholder. [Chiefly British]
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Officeholder
Of"fice*hold"er (?), n. One who holds an office; an officer, particularly one in the civil service; a placeman.
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Officer
Of"fi*cer (?), n. [F. officier. See Office, and cf. Official, n.] 1. One who holds an office; a person lawfully invested with an office, whether civil, military, or ecclesiastical; as, a church officer; a police officer; a staff officer. “I am an officer of state.” Shak.
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2. (U. S. Mil.) Specifically, a commissioned officer, in distinction from a warrant officer or an enlisted man.
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Field officer, General officer, etc. See under Field, General. etc. -- Officer of the day (Mil.), the officer who, on a given day, has charge for that day of the guard, prisoners, and police of the post or camp; abbreviated O. D., OD, or O. O. D. -- Officer of the deck, or Officer of the watch (Naut.), the officer temporarily in charge on the deck of a vessel, esp. a war vessel.
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Officer
Of"fi*cer, v. t. [imp. & p. p. Officered (?); p. pr. & vb. n. Officering.] 1. To furnish with officers; to appoint officers over. Marshall.
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2. To command as an officer; as, veterans from old regiments officered the recruits.
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Office wire
Of"fice wire` (?). (Elec.) Copper wire with a strong but light insulation, used in wiring houses, etc.
[Webster 1913 Suppl.]

Official
Of*fi"cial (?), a. [L. officialis: cf. F. officiel. See Office, and cf. Official, n.] 1. Of or pertaining to an office or public trust; as, official duties, or routine.
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That, in the official marks invested, you
Anon do meet the senate.
Shak.
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2. Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority; as, an official statement or report.
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3. (Pharm.) Approved by authority; sanctioned by the pharmacopoeia; appointed to be used in medicine; as, an official drug or preparation. Cf. Officinal.
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4. Discharging an office or function. [Obs.]
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The stomach and other parts official unto nutrition. Sir T. Browne.
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Official
Of*fi"cial, n. [L. officialis a magistrate's servant or attendant: cf. F. official. See Official, a., and cf. Officer.] 1. One who holds an office; esp., a subordinate executive officer or attendant.
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2. An ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction. Blackstone.
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officialdom
officialdom n. The body of all people elected or appointed to administer a government, taken collectively.
Syn. -- government officials.
[WordNet 1.5]

officialese
officialese n. the formal and often obscure style of writing characteristic of some government officials; bureaucratese; -- it is characterized by euphemisms, circumlocutions, vague abstractions, and circumlocutions.
[WordNet 1.5 +PJC]

Officialism
Of*fi"cial*ism (?), n. The state of being official; a system of official government; also, adherence to office routine; red-tapism.
[1913 Webster]

Officialism may often drift into blunders. Smiles.
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Officiality
Of*fi`ci*al"i*ty (&obreve_;f*f&ibreve_;sh`&ibreve_;*ăl"&ibreve_;*t&ybreve_;), n. See Officialty.
[1913 Webster]

officialize
officialize v. t. to render official; as, we officialized our relationship.
Syn. -- make official.
[WordNet 1.5]

Officially
Of*fi"cial*ly (?), adv. By the proper officer; by virtue of the proper authority; in pursuance of the special powers vested in an officer or office; as, accounts or reports officially verified or rendered; letters officially communicated; persons officially notified.
[1913 Webster]

Officialty
Of*fi"cial*ty (?), n. [Cf. F. officialité.] The charge, office, court, or jurisdiction of an official. Ayliffe.
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Officiant
Of*fi"ciant (?), n. [L. officians, p. pr. See Officiate.] (Eccl.) The officer who officiates or performs an office, as the burial office. Shipley.
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Officiary
Of*fi"ci*a*ry (?), a. Of or pertaining to an office or an officer; official. [R.] Heylin.
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Officiate
Of*fi"ci*ate (?), v. i. [imp. & p. p. Officiated (?); p. pr. & vb. n. Officiating.] [LL. officiare. See Office.] To act as an officer in performing a duty; to transact the business of an office or public trust; to conduct a public ceremony or service. Bp. Stillingfleet.
[1913 Webster]

Officiate
Of*fi"ci*ate, v. t. To discharge, perform, or supply, as an official duty or function. [Obs.]
[1913 Webster]

Merely to officiate light
Round this opacous earth.
Milton.
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Officiator
Of*fi"ci*a`tor (?), n. One who officiates. Tylor.
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Officinal
Of*fic"i*nal (?), a. [F., fr. L. officina a workshop, contr. fr. opificina, fr. opifex a workman; opus work + facere to make or do.] 1. Used in a shop, or belonging to it. [Obs. or R.] Johnson.
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2. (Pharm.) Kept in stock by apothecaries; -- said of such drugs and medicines as may be obtained without special preparation or compounding; not magistral.
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&hand_; This term is often interchanged with official, but in strict use officinal drugs are not necessarily official. See Official, a., 3.
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Officious
Of*fi"cious (?), a. [L. officiosus: cf. F. officieux. See Office.] 1. Pertaining to, or being in accordance with, duty. [R.]
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If there were any lie in the case, it could be no more than an officious and venial one. Note on Gen. xxvii. (Douay version).
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2. Disposed to serve; kind; obliging. [Archaic]
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Yet not to earth are those bright luminaries
Officious.
Milton.
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They were tolerably well bred, very officious, humane, and hospitable. Burke.
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3. Importunately interposing services; intermeddling in affairs in which one has no concern; meddlesome.
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You are too officious
In her behalf that scorns your services.
Shak.
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Syn. -- Impertinent; meddling. See Impertinent.
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-- Of*fi"cious*ly, adv. -- Of*fi"cious*ness, n.
[1913 Webster]

Offing
Off"ing (&obreve_;f"&ibreve_;ng; 115), n. [From Off.] That part of the sea at a good distance from the shore, or where there is deep water and no need of a pilot; also, distance from the shore; as, the ship had ten miles offing; we saw a ship in the offing.
[1913 Webster]

in the offing (a) coming; arriving in the foreseeable future. (b) visible but not nearby.
[PJC]

Offish
Off"ish, a. Shy or distant in manner; aloof; stand-offish. [Colloq. U.S.]
[1913 Webster]

off-key
off-key adj. & adv. Deviating from the proper pitch; -- of a musical note or series of notes; as, an off-key note; to sing off-key.
Syn. -- false, sour.
[WordNet 1.5]

Offlet
Off"let, n. [Off + let.] A pipe to let off water.
[1913 Webster]

off-licence
off-licence n. a store that sells alcoholic beverages for consumption elsewhere.
Syn. -- package store, liquor store.
[WordNet 1.5]

off-limits
off-limits adj. barred to a designated group; as, the topless bar is off-lints to military personnel.
Syn. -- out-of-bounds(predicate).
[WordNet 1.5]

off-line
off-line adj. 1. (Computers) Not connected; -- of computers or computer peripherals normally connected or intended to be connected to other computers by a communications line; as, we can't print the document because the printer is off-line. [Narrower terms: disconnected, not ready, off; unconnected ] on-line
Syn. -- offline, off line(predicate).
[WordNet 1.5]

2. Hence: (fig.) Outside of or after a meeting or formal discussion; as, we can discuss the details off-line; -- a term used at meetings and conferences to suggest postponing detailed discussion of a topic so as not to occupy the time of a large group most of whom may not be interested.
[PJC]

off-peak
off-peak adj. Having less than maximal use or demand or activity; -- of a period of time occurring as a defined part of a time cycle; as, off-peak telepone rates are available at night and on weekends; off-peak fares. [Narrower terms: off-season ] peak
[WordNet 1.5 +PJC]

Offprint
Off`print" (?), v. t. [Off + print.] To reprint (as an excerpt); as, the articles of some magazines are offprinted from other magazines.
[Webster 1913 Suppl.]

Offprint
Off"print` (?), n. A reprint or excerpt.
[Webster 1913 Suppl.]

off-putting
off-putting adj. 1. hard to deal with.
Syn. -- awkward, disconcerting, embarrassing, sticky, tight, unenviable.
[WordNet 1.5]

2. tending to repel.
Syn. -- unappealing.
[WordNet 1.5]

The trappings of upper-class life are off-putting and sterile. Elizabeth Hess

off-road
off-road adj. designed for or used for or taking place on trails and beaches etc., instead of public roads; as, off-road vehicles; off-road sports such as snowmobiling. [Narrower terms: cross-country (vs. road) ]
[WordNet 1.5]

off-roader
off-roader n. a bicycle with a sturdy frame and fat tires; originally designed for riding in mountainous country; amountain bike.
Syn. -- mountain bike, all-terrain bike.
[WordNet 1.5]

Offscouring
Off"scour`ing (?), n. [Off + scour.] That which is scoured off; hence, refuse; rejected matter; that which is vile or despised. Lam. iii. 45.
[1913 Webster]

Offscum
Off"scum` (?), n. [Off + scum.] Removed scum; refuse; dross.
[1913 Webster]

off-season
off-season adj. of or relating to a season of less than maximum demand; as, off-season hotel rates are lower.
[WordNet 1.5]

Offset
Off"set` (?), n. [Off + set. Cf. Set-off.] In general, that which is set off, from, before, or against, something; as: --
[1913 Webster]

1. (Bot.) A short prostrate shoot, which takes root and produces a tuft of leaves, etc. See Illust. of Houseleek.
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2. A sum, account, or value set off against another sum or account, as an equivalent; hence, anything which is given in exchange or retaliation; a set-off.
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3. A spur from a range of hills or mountains.
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4. (Arch.) A horizontal ledge on the face of a wall, formed by a diminution of its thickness, or by the weathering or upper surface of a part built out from it; -- called also set-off.
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5. (Surv.) A short distance measured at right angles from a line actually run to some point in an irregular boundary, or to some object.
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6. (Mech.) An abrupt bend in an object, as a rod, by which one part is turned aside out of line, but nearly parallel, with the rest; the part thus bent aside.
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7. (Print.) A more or less distinct transfer of a printed page or picture to the opposite page, when the pages are pressed together before the ink is dry or when it is poor; an unitended transfer of an image from one page to another; called also setoff.
[1913 Webster +PJC]

8. See offset printing.
[PJC]

Offset staff (Surv.), a rod, usually ten links long, used in measuring offsets.
[1913 Webster]

Offset
Off*set" (?), v. t. [imp. & p. p. Offset; p. pr. & vb. n. Offsetting.] 1. To set off; to place over against; to balance; as, to offset one account or charge against another.
[1913 Webster]

2. To form an offset in, as in a wall, rod, pipe, etc.
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Offset
Off"set, v. i. (Printing) To make an offset.
[1913 Webster]

offset printing
off"set print"ing, n. (Printing) A printing technique in which a lithographic image on an inked metal or stone plate is transferred first to a rubber sheet (usually on a cylinder) before transfer to the paper. Called also offset lithography.
[PJC]

offsetting
off`set"ting adj. Compensating for.
Syn. -- countervailing, compensatory, compensative.
[WordNet 1.5]

Offshoot
Off"shoot` (?), n. [Off + shoot.] That which shoots off or separates from a main stem, channel, family, race, etc.; as, the offshoots of a tree.
[1913 Webster]

Offshore
Off"shore" (?), a. 1. From the shore; as, an offshore wind; an offshore signal.
[1913 Webster]

2. Located in the waters near the shore; as, offshore drilling.
[PJC]

3. Operating or located in a foreign country; as, an offshore bank account; offshore mutual funds.
[PJC]

offsides
offside
offside offsides adj. (Sports) Illegally beyond a prescribed line or area or ahead of the ball or puck; -- in sports such as football or hockey; as, the touchdown was nullified because the left tackle was offside.
[WordNet 1.5]

off-site
off-site adj. Taking place or located away from the specified site; as, an off-site waste treatment operation. Opposite to on-site.
[WordNet 1.5]

Offskip
Off"skip` (?), n. [Off + -skip, as in landskip.] (Paint.) That part of a landscape which recedes from the spectator into the distance. [R.] Fairholt.
[1913 Webster]

Offspring
Off"spring` (?), n. sing. & pl. [Off + spring.]
[1913 Webster]

1. The act of production; generation. [Obs.]
[1913 Webster]

2. That which is produced; a child or children; a descendant or descendants, however remote from the stock.
[1913 Webster]

To the gods alone
Our future offspring and our wives are known.
Dryden.
[1913 Webster]

3. Origin; lineage; family. [Obs.] Fairfax.
[1913 Webster]

off-street
off-street adj. Not performed on the streets; as, off-street parking; off-street unloading of vehicles. Opposite of on-street.
[WordNet 1.5]

Offtake
Off"take` (?), n. [Off + take.] 1. Act of taking off; specif., the taking off or purchase of goods.
[Webster 1913 Suppl.]

2. Something taken off; a deduction.
[Webster 1913 Suppl.]

3. A channel for taking away air or water; also, the point of beginning of such a channel; a take-off.
[Webster 1913 Suppl.]

off-the-cuff
off-the-cuff adj. with little or no preparation or forethought; unrehearsed; extemporaneous; offhand. his off-the-cuff remarks offended many people; an off-the-cuff toast
Syn. -- ad-lib, extemporaneous, extemporary, extempore, offhand, offhanded, unpremeditated, unrehearsed.
[WordNet 1.5]

off the hook
off` the hook" (&obreve_;f` &thlig_;ŭ h&oobreve_;k"), pred. adj. No longer considered responsible; as, Jack admitted breaking the vase, so Jill is off the hook. Used in various situations, with reference to responsibility to perform an action, or guilt for some misdeed.
[PJC]

off-the-rack
off-the-rack adj. Intended to be worn without alterations; ready-to-wear; -- of clothing. Contrasted with made-to-order, custom-made. See pret-a-porter
Syn. -- off-the-shelf, ready-to-wear, pret-a-porter.
[WordNet 1.5]

off-the-shelf
off-the-shelf adj. Made in large quantities and intended to be used without modifications; -- similar to off-the-rack, but not restricted to clothing. Opposite of custom-made, made-to-order, or one-of-a-kind.
[WordNet 1.5 +PJC]

Offuscation
Offuscate
{ Of*fus"cate (?), Of`fus*ca`tion (?) }. See Obfuscate, Obfuscation. [Obs.]
[1913 Webster]

off-white
off-white adj. tending toward white; not pure white.
Syn. -- whitish.
[WordNet 1.5]

off-white
off-white n. a grayish white.
Syn. -- tattletale gray, tattletale grey.
[WordNet 1.5]

Oft
Oft (&obreve_;ft; 115), adv. [AS. oft; akin to OS. & G. oft, OHG. ofto, Sw. ofta, Dan. ofte, Icel. opt, Goth. ufta; of uncertain origin. Cf. Often.] Often; frequently; not rarely; many times. [Poetic] Chaucer.
[1913 Webster]

Oft she rejects, but never once offends. Pope.
[1913 Webster]

Oft
Oft, a. Frequent; often; repeated. [Poetic]
[1913 Webster]

Often
Of"ten (&obreve_;f"'n; 115), adv. [Compar. Oftener (&obreve_;f"'n*&etilde_;r); superl. Oftenest.] [Formerly also ofte, fr. oft. See Oft., adv.] Frequently; many times; not seldom.
[1913 Webster]

Often
Of"ten, a. Frequent; common; repeated. [R.] “Thine often infirmities.” 1 Tim. v. 23.
[1913 Webster]

And weary thee with often welcomes. Beau. & Fl.
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Oftenness
Of"ten*ness, n. Frequency. Hooker.
[1913 Webster]

Oftensith
Of"ten*sith (&obreve_;f"'n*s&ibreve_;th`), adv. [Often + sith time.] Frequently; often. [Obs.]
[1913 Webster]

For whom I sighed have so oftensith. Gascoigne.
[1913 Webster]

Oftentide
Of"ten*tide" (?), adv. [Often + tide time.] Frequently; often. [Obs.] Robert of Brunne.
[1913 Webster]

Oftentimes
Of"ten*times` (?), adv. [Often + time. Cf. -wards.] Frequently; often; many times. Wordsworth.
[1913 Webster]

Ofter
Oft"er (?), adv. Compar. of Oft. [Obs.] Chaucer.
[1913 Webster]

Ofttimes
Oft"times` (?), adv. [Oft + time. Cf. -wards.] Frequently; often. Milton.
[1913 Webster]

Ogam
Og"am (?), n. Same as Ogham.
[1913 Webster]

ogdoad
og"do*ad (&obreve_;g"d&ouptack_;*ăd), n. [Gr. 'ogdoa`s, 'ogdoa`dos, from 'oktw` eight.] A thing made up of eight parts. Milman.
[1913 Webster]

Ogdoastich
Og`do*as`tich (?), n. [Gr. &unr_; the eighth + &unr_; a verse.] A poem of eight lines. [Obs.] Selden
[1913 Webster]

Ogee
O*gee" (?), n. [F. ogive, augive, LL. augiva, of uncertain origin; cf.LL. ogis a support, prop. L. augere to increase, strengthen, Sp. auge highest point of power or fortune, apogee, Ar. auj, an astronomical term.]
[1913 Webster]

1. (Arch.) A molding, the section of which is the form of the letter S, with the convex part above; cyma reversa. See Illust. under Cyma.
[1913 Webster]

2. Hence, any similar figure used for any purpose.
[1913 Webster]

Ogee arch (Arch.), a pointed arch, each of the sides of which has the curve of an ogee, that is, has a reversed curve near the apex.
[1913 Webster]

Ogeechee lime
O*gee"chee lime` (?). [So named from the Ogeechee River in Georgia.] (Bot.) (a) The acid, olive-shaped, drupaceous fruit of a species of tupelo (Nyssa capitata) which grows in swamps in Georgia and Florida. (b) The tree which bears this fruit.
[1913 Webster]

Ogganition
Og`ga*ni"tion (?), n. [L. oggannire to snarl at; ob (see Ob-) + gannire to yelp.] Snarling; grumbling. [R.] Bp. Montagu.
[1913 Webster]

Ogham
Og"ham (?), n. [Ir.] A particular kind of writing practiced by the ancient Irish, and found in inscriptions on stones, metals, etc. [Written also ogam.]
[1913 Webster]

Ogive
O"give (?), n. [F. ogive, OF. augive a pointed arch, LL. augiva a double arch of two at right angles.] (Arch.) The arch or rib which crosses a Gothic vault diagonally.
[1913 Webster]

Ogle
O"gle (ōg'l), v. t. [imp. & p. p. Ogled (ōg'ld); p. pr. & vb. n. Ogling (ō"gl&ibreve_;ng).] [From a Dutch word corresponding to G. äugeln to ogle, fr. auge eye; cf. D. ooglonken to ogle, OD. oogen to cast sheep's eyes upon, ooge eye. See Eye.] 1. To view or look at with side glances, as in fondness, or with a design to attract notice.
[1913 Webster]

And ogling all their audience, ere they speak. Dryden.
[1913 Webster]

2. To stare at conspicuously or impertinently.
[PJC]

Ogle
O"gle, n. An amorous side glance or look. Byron.
[1913 Webster]

Ogler
O"gler (?), n. One who ogles. Addison.
[1913 Webster]

Oglio
O"gli*o (?), n. See Olio.
[1913 Webster]

Ogre
O"gre (ō"g&etilde_;r), n. [F., fr. Sp. ogro, fr. L. Orcus the god of the infernal regions; also, the lower world, hell.] An imaginary monster, or hideous giant of fairy tales, who lived on human beings; hence, any frightful giant; a cruel monster.
[1913 Webster]

His schoolroom must have resembled an ogre's den. Maccaulay.
[1913 Webster]

Ogreish
O"gre*ish, a. Resembling an ogre; having the character or appearance of an ogre; suitable for an ogre. “An ogreish kind of jocularity.” Dickens.
[1913 Webster]

Ogrism
Ogreism
{ O"gre*ism (?), O"grism (?) }, n. The character or manners of an ogre.
[1913 Webster]

Ogress
O"gress (?), n. [F. ogresse. See Ogre.] A female ogre. Tennyson.
[1913 Webster]

Ogygian
O*gyg"i*an (&ouptack_;*j&ibreve_;j"&ibreve_;*&aitalic_;n), a. [L. Ogygius, Gr. 'Ogy`gios.] Of or pertaining to Ogyges, a mythical king of ancient Attica, or to a great deluge in Attica in his days; hence, primeval; of obscure antiquity.
[1913 Webster]

Oh
Oh (ō), interj. [See O, interj.] An exclamation expressing various emotions, according to the tone and manner, especially surprise, pain, sorrow, anxiety, or a wish. See the Note under O.
[1913 Webster]

Ohioan
Ohioan prop. n. A resident of Ohio.
Syn. -- Buckeye.
[WordNet 1.5]

Ohm
Ohm (ōm), n. [So called from the German electrician, G. S. Ohm.] (Elec.) The standard unit in the measure of electrical resistance, being the resistance of a circuit in which a potential difference of one volt produces a current of one ampére. As defined by the International Electrical Congress in 1893, and by United States Statute, it is a resistance substantially equal to 109 units of resistance of the C. G. S. system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice 14.4521 grams in mass, of a constant cross-sectional area, and of the length of 106.3 centimeters. As thus defined it is called the international ohm.
[1913 Webster]

Ohm's law (Elec.), the statement of the fact that the strength or intensity of an electrical current is directly proportional to the electro-motive force, and inversely proportional to the resistance of the circuit.
[1913 Webster]

Ohmmeter
Ohm"me`ter (?), n. [Ohm + meter.] (Elec.) An instrument for indicating directly the electrical resistance of a circuit in ohms.
[Webster 1913 Suppl.]

Oho
O*ho" (?), interj. An exclamation of surprise, etc.
[1913 Webster]

-oid
-oid (-oid) suff. [Gr. &unr_;, fr. e'i^dos form, akin to &unr_; to see, and E. wit: cf. F. -oïde, L. -oïdes.] A suffix or combining form meaning like, resembling, in the form of; as in anthropoid, asteroid, spheroid.
[1913 Webster]

Oidium
O*ïd"i*um (?), n. [NL., dim. fr. Gr. w,'o`n egg.] (Bot.) A genus of minute fungi which form a floccose mass of filaments on decaying fruit, etc. Many forms once referred to this genus are now believed to be temporary conditions of fungi of other genera, among them the vine mildew (Oïdium Tuckeri), which has caused much injury to grapes.
[1913 Webster]

Oil
Oil (oil), n. [OE. oile, OF. oile, F. huile, fr. L. oleum; akin to Gr. &unr_;. Cf. Olive.] Any one of a great variety of unctuous combustible substances, more viscous than and not miscible with water; as, olive oil, whale oil, rock oil, etc. They are of animal, vegetable, or mineral origin and of varied composition, and they are variously used for food, for solvents, for anointing, lubrication, illumination, etc. By extension, any substance of an oily consistency; as, oil of vitriol.
[1913 Webster]

&hand_; The mineral oils are varieties of petroleum. See Petroleum. The vegetable oils are of two classes, essential oils (see under Essential), and natural oils which in general resemble the animal oils and fats. Most of the natural oils and the animal oils and fats consist of ethereal salts of glycerin, with a large number of organic acids, principally stearic, oleic, and palmitic, forming respectively stearin, olein, and palmitin. Stearin and palmitin prevail in the solid oils and fats, and olein in the liquid oils. Mutton tallow, beef tallow, and lard are rich in stearin, human fat and palm oil in palmitin, and sperm and cod-liver oils in olein. In making soaps, the acids leave the glycerin and unite with the soda or potash.
[1913 Webster]

Animal oil, Bone oil, Dipple's oil, etc. (Old Chem.), a complex oil obtained by the distillation of animal substances, as bones. See Bone oil, under Bone. -- Drying oils, Essential oils. (Chem.) See under Drying, and Essential. -- Ethereal oil of wine, Heavy oil of wine. (Chem.) See under Ethereal. -- Fixed oil. (Chem.) See under Fixed. -- Oil bag (Zool.), a bag, cyst, or gland in animals, containing oil. -- Oil beetle (Zool.), any beetle of the genus Meloe and allied genera. When disturbed they emit from the joints of the legs a yellowish oily liquor. Some species possess vesicating properties, and are used instead of cantharides. -- Oil box, or Oil cellar (Mach.), a fixed box or reservoir, for lubricating a bearing; esp., the box for oil beneath the journal of a railway-car axle. -- Oil cake. See under Cake. -- Oil cock, a stopcock connected with an oil cup. See Oil cup. -- Oil color. (a) A paint made by grinding a coloring substance in oil. (b) Such paints, taken in a general sense. -- (b) a painting made from such a paint. -- Oil cup, a cup, or small receptacle, connected with a bearing as a lubricator, and usually provided with a wick, wire, or adjustable valve for regulating the delivery of oil. -- Oil engine, a gas engine worked with the explosive vapor of petroleum. -- Oil gas, inflammable gas procured from oil, and used for lighting streets, houses, etc. -- Oil gland. (a) (Zool.) A gland which secretes oil; especially in birds, the large gland at the base of the tail. (b) (Bot.) A gland, in some plants, producing oil. -- Oil green, a pale yellowish green, like oil. -- Oil of brick, empyreumatic oil obtained by subjecting a brick soaked in oil to distillation at a high temperature, -- used by lapidaries as a vehicle for the emery by which stones and gems are sawn or cut. Brande & C. -- Oil of talc, a nostrum made of calcined talc, and famous in the 17th century as a cosmetic. [Obs.] B. Jonson. -- Oil of vitriol (Chem.), strong sulphuric acid; -- so called from its oily consistency and from its forming the vitriols or sulphates. -- Oil of wine, Œnanthic ether. See under Œnanthic. -- Oil painting. (a) The art of painting in oil colors. (b) Any kind of painting of which the pigments are originally ground in oil. -- Oil palm (Bot.), a palm tree whose fruit furnishes oil, esp. Elaeis Guineensis. See Elaeis. -- Oil sardine (Zool.), an East Indian herring (Clupea scombrina), valued for its oil. -- Oil shark (Zool.) (a) The liver shark. (b) The tope. -- Oil still, a still for hydrocarbons, esp. for petroleum. -- Oil test, a test for determining the temperature at which petroleum oils give off vapor which is liable to explode. -- Oil tree. (Bot.) (a) A plant of the genus Ricinus (Ricinus communis), from the seeds of which castor oil is obtained. (b) An Indian tree, the mahwa. See Mahwa. (c) The oil palm. -- To burn the midnight oil, to study or work late at night. -- Volatle oils. See Essential oils, under Essential.
[1913 Webster]

Oil
Oil (?), v. t. [imp. & p. p. Oiled (?); p. pr. & vb. n. Oiling.] To smear or rub over with oil; to lubricate with oil; to anoint with oil.
[1913 Webster]

oil-bearing
oil-bearing adj. containing oils; -- of geological formations; as, oil-bearing shale.
[WordNet 1.5]

oilbird
oil"bird` (?), n. (Zool.) See Guacharo.
[1913 Webster]

oilcan
oil"can` (?), n. A small can with a long spout used to apply oil to machinery, for purposes of lubrication.
[PJC]

oilcloth
oil"cloth` (?), n. Cloth rendered waterproof by treatment with oil or paint, and used for marking garments, covering tables, shelves, floors, etc.
[1913 Webster +PJC]

oiled
oiled (oild), a. 1. Covered or treated with oil; dressed with, or soaked in, oil.
[1913 Webster]

2. Drunk; inebriated. [slang]
[PJC]

Oiled silk, silk rendered waterproof by saturation with boiled oil. -- well oiled, (a) operating smoothly and efficiently. (b) very drink. [slang]
[1913 Webster +PJC]

Oiler
Oil"er (?), n. 1. One who deals in oils.
[1913 Webster]

2. One who, or that which, oils.
[1913 Webster]

3. An oil tanker.
[PJC]

4. A ship which is powered by oil.
[PJC]

5. An oilcan.
[PJC]

Oilery
Oil"er*y (?), n. [Cf. F. huilerie.] The business, the place of business, or the goods, of a maker of, or dealer in, oils.
[1913 Webster]

oil-fired
oil-fired adj. Using oil as a fuel; as, an oil-fired furnace.
[WordNet 1.5]

oilfish
oilfish n. A very large deep-water snake mackerel (Ruvettus pretiosus).
[WordNet 1.5]

oil-heater
oil heater
oil heater, oil-heater n. A heating or cooking device that burns oil (such as kerosine) as a fuel.
Syn. -- oilstove, kerosene heater, kerosine heater.
[WordNet 1.5]

Oiliness
Oil"i*ness (?), n. The quality of being oily. Bacon.
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Oillet
Oil"let (?), n. [See Eyelet.] (Arch.) (a) A small opening or loophole, sometimes circular, used in mediaeval fortifications. (b) A small circular opening, and ring of moldings surrounding it, used in window tracery in Gothic architecture. [Written also oylet.]
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Oilman
Oil"man (?), n.; pl. Oilmen (&unr_;). 1. One who deals in oils; formerly, one who dealt in oils and pickles.
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2. A person working in the petroleum industry, esp. an oil company executive.
[PJC]

Oilnut
Oil"nut` (?), n. (Bot.) The buffalo nut. See Buffalo nut, under Buffalo.
[1913 Webster]

&hand_; The name is also applied to various nuts and seeds yielding oil, as the butternut, cocoanut, oil-palm nut.
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oil patch
oil" patch` (?), n. 1. A geographical region from which petroleum is extracted.
[PJC]

2. The petroleum producing industry; as, low oil prices cause hard times in the oil patch.
[PJC]

oilrig
oil rig
oil" rig`, oil"rig` n. A structure and associated machinery used in drilling for oil or gas; it is usually in the form of a tower. Called also drilling rig.
Syn. -- drill rig, drilling rig, oil rig.
[WordNet 1.5]

Oilseed
Oil"seed` (?), n. (Bot.) (a) Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See Castor bean. (b) A cruciferous herb (Camelina sativa). (c) The sesame.
[1913 Webster]

oil-silk
oil-silk n. Silk treated with oil to make it water-tight; -- it is used to make raincoats.
[WordNet 1.5]

Oilskin
Oil"skin` (?), n. Cloth made waterproof by oil.
[1913 Webster]

oil slick
oil" slick` n. A layer of oil floating on water; -- usually petroleum or fuel oil which has leaked from a ship.
[PJC]

oil spill
oil" spill` n. A layer of oil floating on water or covering the shoreline of a body of water; -- usually petroleum which has leaked from an oil tanker.
[PJC]

Oilstone
Oil"stone` (?), n. A variety of hone slate, or whetstone, used for whetting tools when lubricated with oil.
[1913 Webster]

oilstove
oilstove n. A stove that burns oil (such as kerosine) for heating or cooking.
Syn. -- oil-heater, oil heater, kerosene heater, kerosine heater.
[WordNet 1.5]

oil tanker
oil" tank`er n. A ship having large compartments, designed to transport crude oil over the ocean.
[PJC]

oil well
oil" well` n. A well{3} from which petroleum is or has been extracted; a well{3} drilled deeply into an oil-bearing geological formation specifically for the purpose of obtaining petroleum.
[PJC]

Oily
Oil"y (?), a. [Compar. Oilier (?); superl. Oiliest.] 1. Consisting of oil; containing oil; having the nature or qualities of oil; unctuous; oleaginous; as, oily matter or substance. Bacon.
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2. Covered with oil; greasy; hence, resembling oil; as, an oily appearance.
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3. Smoothly subservient; supple; compliant; plausible; insinuating. “This oily rascal.” Shak.
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His oily compliance in all alterations. Fuller.
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Oily grain (Bot.), the sesame. -- Oily palm, the oil palm.
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Oinement
Oi"ne*ment (?), n. Ointment. [Obs.] Chaucer.
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Oinomania
Oi`no*ma"ni*a (?), n. See oenomania.
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Oint
Oint (?), v. t. [imp. & p. p. Ointed; p. pr & vb. n. Ointing.] [F. oint, p. p. of oindre, L. ungere. See Anoint, Ointment.] To anoint. [Obs.] Dryden.
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Ointment
Oint"ment (?), n. [OE. oinement, OF. oignement, fr. F. oindre to anoint, L. ungere, unguere; akin to Skr. añj, and to G. anke (in Switzerland) butter. The first t in the E. word is due to the influence of anoint. Cf. Anoint, Unguent.] That which serves to anoint; any soft unctuous substance used for smearing or anointing; an unguent.
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Ojibways
O*jib"ways (?), prop. n. pl.; sing. Ojibway. (Ethnol.) Same as Chippeways.
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ojo
o"jo (?), n. [Sp., prop., an eye.] A spring, surrounded by rushes or rank grass; an oasis. [Southwestern U.S.] Bartlett.
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okapi
o*ka"pi (?), n. [Native name on the borders of Belgian Congo, possibly the same word as Mpongwe okapo lean.] A peculiar mammal (Okapia johnstoni) closely related to the giraffe, discovered in the deep forests of Belgian Congo in 1900. It is smaller than an ox, and somewhat like a giraffe, except that the neck is much shorter. Like the giraffe, it has no dewclaws. There is a small prominence on each frontal bone of the male. The color of the body is chiefly reddish chestnut, the cheeks are yellowish white, and the fore and hind legs above the knees and the haunches are striped with purplish black and cream color.
[Webster 1913 Suppl.]

Okapia
Okapia prop. n. A genus of mammals comprising the okapis.
Syn. -- genus Okapia.
[WordNet 1.5]

okay
okay adj. Satifactory; agreeable; pleasant; as, things are okay; he's an okay guy.
Syn. -- all right(predicate), all-right(prenominal), ok, o.k.
[WordNet 1.5 +PJC]

okay
okay n. An endorsement; approval; permission; as, they gave us the okay to go ahead.
Syn. -- OK, okey, okeh.
[WordNet 1.5]

okay
okay v. t. to approve; as, the boss okayed my proposal.
Syn. -- approve, ok, sanction.
[WordNet 1.5]

Oke
Oke (ōk), n. [Turk. okkah, fr. Ar. ūkīyah, wakīyah, prob. fr. Gr. o'yggi`a, o'ygki`a, an ounce, fr. L. uncia. Cf. Ounce a weight.] 1. A Turkish and Egyptian weight, equal to about 23/4 pounds.
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2. An Hungarian and Wallachian measure, equal to about 21/2 pints.
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okey
okeh
okeh, okey n. Variant spellings of okay.
Syn. -- OK, okay.
[WordNet 1.5]

Okenite
O"ken*ite (?), n. [Prob. from Lorenz Oken, a German naturalist.] (Min.) A massive and fibrous mineral of a whitish color, chiefly hydrous silicate of lime.
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Oker
O"ker (?), n. (Min.) See Ocher.
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Okinawa
Okinawa prop. n. 1. the largest island of the central Ryukyu Islands.
[WordNet 1.5]

2. A campaign in the closing days of World War II in the Pacific (April-June 1945); in savage close-quarter fighting US marines and regular army troops took the island from the Japanese; considered the greatest victory of the Pacific campaign for the Americans.
Syn. -- Okinawa campaign.
[WordNet 1.5]

Okra
O"kra (?), n. 1. (Bot.) An annual plant (Abelmoschus esculentus syn. Hibiscus esculentus), whose green pods, abounding in nutritious mucilage, are much used for soups, stews, or pickles; gumbo. [Written also ocra and ochra.]
[1913 Webster]

2. The pods of the plant okra, used as a vegetable; also, a dish prepared with them; gumbo.
[Webster 1913 Suppl.]

-ol
-ol (-ōl or -&obreve_;l) suff. [From alcohol.] (Chem.) A suffix denoting that the substance in the name of which it appears belongs to the series of alcohols or hydroxyl derivatives, as ethanol, carbinol, phenol, glycerol, etc. Such compounds contain the hydroxy radical (-OH).
[1913 Webster +PJC]

Olay
O"lay (ō"lī), n. pl. [Tamil ōlai.] Palm leaves, prepared for being written upon with a style pointed with steel. [Written also ola.] Balfour (Cyc. of India).
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Old
Old (ōld), n. Open country. [Obs.] See World. Shak.
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Old
Old, a. [Compar. Older (?); superl. Oldest.] [OE. old, ald, AS. ald, eald; akin to D. oud, OS. ald, OFries. ald, old, G. alt, Goth. alpeis, and also to Goth. alan to grow up, Icel. ala to bear, produce, bring up, L. alere to nourish. Cf. Adult, Alderman, Aliment, Auld, Elder.]
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1. Not young; advanced far in years or life; having lived till toward the end of the ordinary term of living; as, an old man; an old age; an old horse; an old tree.
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Let not old age disgrace my high desire. Sir P. Sidney.
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The melancholy news that we grow old. Young.
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2. Not new or fresh; not recently made or produced; having existed for a long time; as, old wine; an old friendship. “An old acquaintance.” Camden.
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3. Formerly existing; ancient; not modern; preceding; original; as, an old law; an old custom; an old promise. “The old schools of Greece.” Milton. “The character of the old Ligurians.” Addison.
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4. Continued in life; advanced in the course of existence; having (a certain) length of existence; -- designating the age of a person or thing; as, an infant a few hours old; a cathedral centuries old.
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And Pharaoh said unto Jacob, How old art thou? Cen. xlvii. 8.
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&hand_; In this use old regularly follows the noun that designates the age; as, she was eight years old.
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5. Long practiced; hence, skilled; experienced; cunning; as, an old offender; old in vice.
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Vane, young in years, but in sage counsel old. Milton.
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6. Long cultivated; as, an old farm; old land, as opposed to new land, that is, to land lately cleared.
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7. Worn out; weakened or exhausted by use; past usefulness; as, old shoes; old clothes.
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8. More than enough; abundant. [Obs.]
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If a man were porter of hell gate, he should have old turning the key. Shak.
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9. Aged; antiquated; hence, wanting in the mental vigor or other qualities belonging to youth; -- used disparagingly as a term of reproach.
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10. Old-fashioned; wonted; customary; as of old; as, the good old times; hence, colloquially, gay; jolly.
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11. Used colloquially as a term of cordiality and familiarity. “Go thy ways, old lad.” Shak.
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Old age, advanced years; the latter period of life. -- Old bachelor. See Bachelor, 1. -- Old Catholics. See under Catholic. -- Old English. See under English. n., 2. -- Old Nick, Old Scratch, the devil. -- Old lady (Zool.), a large European noctuid moth (Mormo maura). -- Old maid. (a) A woman, somewhat advanced in years, who has never been married; a spinster. (b) (Bot.) A West Indian name for the pink-flowered periwinkle (Vinca rosea). (c) A simple game of cards, played by matching them. The person with whom the odd card is left is the old maid. -- Old man's beard. (Bot.) (a) The traveler's joy (Clematis Vitalba). So named from the abundant long feathery awns of its fruit. (b) The Tillandsia usneoides. See Tillandsia. -- Old man's head (Bot.), a columnar cactus (Pilocereus senilis), native of Mexico, covered towards the top with long white hairs. -- Old red sandstone (Geol.), a series of red sandstone rocks situated below the rocks of the Carboniferous age and comprising various strata of siliceous sandstones and conglomerates. See Sandstone, and the Chart of Geology. -- Old school, a school or party belonging to a former time, or preserving the character, manner, or opinions of a former time; as, a gentleman of the old school; -- used also adjectively; as, Old-School Presbyterians. -- Old sledge, an old and well-known game of cards, called also all fours, and high, low, Jack, and the game. -- Old squaw (Zool.), a duck (Clangula hyemalis) inhabiting the northern parts of both hemispheres. The adult male is varied with black and white and is remarkable for the length of its tail. Called also longtailed duck, south southerly, callow, hareld, and old wife. -- Old style. (Chron.) See the Note under Style. -- Old Testament. See Old Testament under Testament, and see tanak. -- Old wife. [In the senses b and cwritten also oldwife.] (a) A prating old woman; a gossip.

Refuse profane and old wives' fables. 1 Tim. iv. 7.

(b) (Zool.) The local name of various fishes, as the European black sea bream (Cantharus lineatus), the American alewife, etc. (c) (Zool.) A duck; the old squaw. -- Old World, the Eastern Hemisphere.

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Syn. -- Aged; ancient; pristine; primitive; antique; antiquated; old-fashioned; obsolete. See Ancient.
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Old Dominion
Old Dominion. Virginia; -- a name of uncertain origin, perh. from the old designation of the colony as “the Colony and Dominion of Virginia.”
[Webster 1913 Suppl.]

Olden
Old"en (?), a. Old; ancient; as, the olden time. “A minstrel of the olden stamp.” J. C. Shairp.
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Olden
Old"en, v. i. To grow old; to age. [R.]
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She had oldened in that time. Thackeray.
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Old-fashioned
Old`-fash"ioned (?), a. Formed according to old or obsolete fashion or pattern; belonging to or characteristic of times past; adhering to old customs, styles, or ideas; as, an old-fashioned dress, girl; old-fashioned wire-rimmed glasses.Old-fashioned men of wit.” Addison.
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This old-fashioned, quaint abode. Longfellow.
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2. Unacceptable or suboptimum because of having been superseded by something more recent; outmoded{2}; out-of-date. [Narrower terms: old-fashioned, out of fashion(predicate), out of style(predicate), passe, passee.]
Syn. -- antique, old-hat(predicate), outmoded, out-of-date.
[WordNet 1.5 +PJC]

3. Unfashionably out of date; out of style. [Narrower terms: unfashionable (vs. fashionable)]
Syn. -- demode, out of fashion(predicate), out of style(predicate), passe, passee.
[WordNet 1.5 +PJC]

old-fashioned
old fashioned
old fashioned, old-fashioned n. A cocktail consisting of whiskey, bitters, and sugar, garnished with with fruit slices and often a cherry.
[WordNet 1.5 +PJC]

Old-gentlemanly
Old`-gen"tle*man*ly (?), a. Pertaining to an old gentleman, or like one. Byron.
[1913 Webster]

old-hat
old-hat pred. adj. same as old-fashioned, a., 2. [Narrower terms: unfashionable (vs. fashionable)]
Syn. -- antique, old-fashioned, outmoded, out-of-date, passe, passee.
[WordNet 1.5]

Oldish
Old"ish, a. Somewhat old.
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Old lang syne
Old` lang syne" (?). See Auld lang syne.
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Old Line State
Old Line State n. Maryland; a nickname, alluding to the fact that its northern boundary is Mason and Dixon's line.
[Webster 1913 Suppl.]

old-maidish
old`-maid"ish (?), a. Like an old maid; prim; precise; particular; overly fastidious.
Syn. -- fussy, old-womanish.
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Old-maidism
Old`-maid"ism (?), n. The condition or characteristics of an old maid. G. Eliot.
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old-man-of-the-woods
old-man-of-the-woods n. An edible mild-tasting mushroom (Strobilomyces floccopus) found in coniferous woodlands of eastern North America.
Syn. -- old man of the woods, Strobilomyces floccopus.
[WordNet 1.5]

Oldness
Old"ness, n. The state or quality of being old; old age.
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Oldster
Old"ster (?), n. [Cf. Youngster.] An old person. [Jocular] H. Kingsley.
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old-time
old-time adj. attractively old-fashioned.
Syn. -- quaint.
[WordNet 1.5]

oldwife
oldwife n. 1. (Zool.) The local name of various fishes, as the European black sea bream (Cantharus lineatus), the American alewife, etc.
[WordNet 1.5]

2. (Zool.) A tropical Atlantic fish (Bessy cerca). [wns=1]
Syn. -- queen triggerfish, Bessy cerca, oldwench, Balistes vetula.
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3. (Zool.) A common long-tailed sea duck (Clangula hyemalis) of the northern parts of the US; also called old squaw. [wns=2]
Syn. -- old squaw, Clangula hyemalis.
[WordNet 1.5]

old-womanish
old`-wom`an*ish (?), a. Like an old woman; anile; primly fastidious; old-maidish. -- Old`-wom"an*ish*ness, n.
Syn. -- fussy, old-maidish.
[1913 Webster + WordNet 1.5]

Old World
Old World n. The combined territories of Europe, Asia, and Africa. The Eastern Hemisphere, as distinguished from The Americas, Australia, and the Pacific Islands.
[PJC]

old-world
old-world adj. 1. Characteristic of former times especially in Europe; as, an old-world cottage.
[WordNet 1.5]

2. (Biology) Native to the Old World; not found in the Americas; as, old-world monkeys.
[PJC]

Olea
O"le*a (?), prop. n. [L. olive. See Olive.] (Bot.) A genus of trees including the olive.
[1913 Webster]

&hand_; The Chinese Olea fragrans, noted for its fragrance, and the American devilwood (Olea Americana) are now usually referred to another genus (Osmanthus).
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Oleaceae
Oleaceae prop. n. A natural family of trees and shrubs having berries or drupes or capsules as fruits; the olive family; sometimes placed in the order Oleales; it includes the olive; ash; jasmine; privet; and lilac.
Syn. -- family Oleaceae, olive family.
[WordNet 1.5]

Oleaceous
O`le*a"ceous (?), a. [L. oléaceus of the olive tree.] (Bot.) Of, pertaining to, or resembling, a natural family of plants (Oleaceae), mostly trees and shrubs, of which the olive is the type. It includes also the ash, the lilac, the true jasmine, and fringe tree.
[1913 Webster]

Oleaginous
O`le*ag`i*nous (?), a. [L. oleaginus, oleagineus, belonging to the olive, fr. olea olive: cf. F. oléagineux. See Olive, Oil.] Having the nature or qualities of oil; oily; unctuous.
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Oleaginousness
O`le*ag`i*nous*ness, n. Oiliness. Boyle.
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Oleamen
O`le*a"men (?), n. [L.] (Med.) A soft ointment prepared from oil. Dunglison.
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Oleander
O`le*an"der (?), n. [F. oléandre (cf. It. oleandro, LL. lorandrum), prob. corrupted, under the influence of laurus laurel, fr. L. rhododendron, Gr. &unr_;; &unr_; rose + &unr_; tree.] (Bot.) A beautiful evergreen shrub (Nerium oleander) of the Dogbane family, having clusters of fragrant red, white, or pink flowers. It is a native of the East Indies, but the red variety has become common in the south of Europe. Called also rosebay, rose laurel, and South-sea rose.
[1913 Webster +PJC]

&hand_; Every part of the plant is dangerously poisonous, and death has occurred from using its wood for skewers in cooking meat.
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Oleandra
Oleandra prop. n. A genus of tropical epiphytic or terrestrial ferns; also classed as the family Polypodiaceae.
Syn. -- genus Oleandra.
[WordNet 1.5]

Oleandraceae
Oleandraceae prop. n. One of a number of families into which Polypodiaceae has been subdivided in some classification systems.
Syn. -- family Oleandraceae.
[WordNet 1.5]

Oleandrin
O`le*an"drin (?), n. (Chem.) One of several cardiac glycosides (C32H48O9) found in oleander (Nerium oleander).
[PJC]

Oleandrine
O`le*an"drine (?), n. (Chem.) One of several alkaloids found in the leaves of the oleander (Nerium oleander).
[1913 Webster]

Olearia
Olearia prop. n. A large genus of Australian evergreen shrubs or small trees with large daisylike flowers.
Syn. -- genus Olearia.
[WordNet 1.5]

Oleaster
O`le*as"ter (?), n. [L., fr. olea olive tree. See Olive, Oil.] (Bot.) (a) The wild olive tree (Olea Europea, var. sylvestris). (b) Any species of the genus Elaeagus. See Eleagnus. The small silvery berries of the common species (Elaeagnus hortensis) are called Trebizond dates, and are made into cakes by the Arabs.
[1913 Webster]

Oleate
O"le*ate (?), n. [Cf. F. oléate.] (Chem.) A salt of oleic acid. Some oleates, as the oleate of mercury, are used in medicine by way of inunction.
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Olecranal
O*lec"ra*nal (?), a. (Anat.) Of or pertaining to the olecranon.
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Olecranon
O*lec"ra*non (?), n. [NL., fr. Gr. &unr_;; &unr_; elbow + krani`on the head.] (Anat.) The large process at the proximal end of the ulna which projects behind the articulation with the humerus and forms the bony prominence of the elbow.
[1913 Webster]

Olefiant
O*le"fi*ant (?), a. [F. oléfiant, fr.L. oleum oil + -ficare (in comp.). Cf. -Fy.] (Chem.) Forming or producing an oil; specifically, designating a colorless gaseous hydrocarbon called ethylene (olefiant gas). [Archaic]
[1913 Webster]

olefine
olefin
o"le*fin, o"le*fine (ō"l&euptack_;*f&ibreve_;n or ō"l&euptack_;*fēn), n. [From Olefiant.] 1. (Chem.) Olefiant gas, or ethylene. See Ethylene. [archaic]
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2. Hence: (Chem.) Any one of the series of unsaturated hydrocarbons of which ethylene is the type; a member of the alkene series of hydrocarbons; an alkene.
[1913 Webster + PJC]

Oleic
O"le*ic (ō*lē"&ibreve_;k or ō*lā"&ibreve_;k or ō"l&euptack_;*&ibreve_;k), a. [L. oleum oil: cf. F. oléique.] (Physiol.Chem.) Pertaining to, derived from, or contained in, oil; as, oleic acid, an acid of the acrylic acid series found combined with glyceryl in the form of olein in certain animal and vegetable fats and oils, such as sperm oil, olive oil, etc. At low temperatures the acid is crystalline, but melts to an oily liquid above 14° C.
[1913 Webster]

Oleiferous
O`le*if`er*ous (?), a. [L. oleum oil + -ferous: cf. F. oléifére.] Producing oil; as, oleiferous seeds.
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Olein
O"le*in (ō"l&euptack_;*&ibreve_;n), n. [L. oleum oil: cf. F. oléine.] (Physiol. Chem.) A fat, liquid at ordinary temperatures, but solidifying at temperatures below 0° C., found abundantly in both the animal and vegetable kingdoms (see Palmitin). It dissolves solid fats, especially at 30-40° C. Chemically, olein is a glyceride of oleic acid; and, as three molecules of the acid are united to one molecule of glycerol to form the fat, it is technically known as triolein. It is also called elain.
[1913 Webster]

Olent
O"lent (?), a. [L. olens, p. pr. of olere to smell.] Scented. [R.] R. Browning.
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Oleograph
O`le*o*graph (?), n. [L. oleum oil + -graph.] 1. (Chem.) The form or figure assumed by a drop of oil when placed upon water or some other liquid with which it does not mix.
[1913 Webster]

2. (Painting) A picture produced in oils by a process analogous to that of lithographic printing.
[1913 Webster]

Oleography
O`le*og"ra*phy (?), n. 1. Art or process of producing the pictures known as oleographs.
[Webster 1913 Suppl.]

2. A process of identifying oils by their oleographs.
[Webster 1913 Suppl.]

Oleomargarine
O`le*o*mar"ga*rine (?), n. [L. oleum oil + E. margarine, margarin.] [Written also oleomargarin.] 1. A liquid oil made from animal fats (esp. beef fat) by separating the greater portion of the solid fat or stearin, by crystallization. It is mainly a mixture of olein and palmitin with some little stearin. [archaic]
[1913 Webster]

2. An artificial butter made by emulsifying a fatty oil with more or less milk and water; it was formerly made predominantly from animal fats, but now is made predominantly or exclusively from vegetable oils, sometimes mixed with animal fats.
[1913 Webster +PJC]

&hand_; Oleomargarine was wrongly so named, as it contains no margarin proper, but olein, palmitin, and stearin, a mixture of palmitin and stearin having formerly been called margarin by mistake.
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Oleometer
O`le*om`e*ter (?), n. [L. oleum oil + -meter.] (Chem.) An instrument for ascertaining the weight and purity of oil; an elaiometer.
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Oleone
O"le*one (?), n. [L. oleum + -one, 1.] (Chem.) An oily liquid, obtained by distillation of calcium oleate, and probably consisting of the ketone of oleic acid.
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Oleo oil
O`le*o oil (?). An oil expressed from certain animal fats (esp. beef suet), the greater portion of the solid fat, or stearin, being left behind. It is mixture of olein, palmitin, and a little stearin.
[Webster 1913 Suppl.]

Oleoptene
O`le*op"tene (?), n. [L. oleum oil + Gr. &unr_; fleeting.] (Chem.) See Elaeoptene. [R.]
[1913 Webster]

Oleoresin
O`le*o*res"in (?), n. [L. oleum oil + E. resin.] 1. (Chem.) A natural mixture of a terebinthinate oil and a resin.
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2. (Med.) A liquid or semiliquid preparation extracted (as from capsicum, cubebs, or ginger) by means of ether, and consisting of fixed or volatile oil holding resin in solution.
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-- O`le*o*res"in*ous (#), a.
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Oleous
Oleose
{ O"le*ose` (?), O"le*ous (?), } a. [L. oleosus, fr. oleum oil.] Oily. [R.] Ray. Floyer.
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Oleosity
O`le*os"i*ty (?), n. The state or quality of being oily or fat; fatness. [R.] B. Jonson.
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Oleraceous
Ol`er*a"ceous (?), a. [L. oleraceus, from olus, oleris, garden or pot herbs, vegetables.] Pertaining to pot herbs; of the nature or having the qualities of herbs for cookery; esculent. Sir T. Browne.
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Olf
Olf (?), n. [Etymol. uncertain.] (Zool.) The European bullfinch. [Prov. Eng.]
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Olfaction
Ol*fac"tion (?), n. [See Olfactory.] (Physiol.) The sense by which the impressions made on the olfactory organs by the odorous particles in the atmosphere are perceived.
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Olfactive
Ol*fac"tive (?), a. See Olfactory, a.
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Olfactor
Ol*fac"tor (?), n. A smelling organ; a nose. [R.]
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Olfactory
Ol*fac"to*ry (?), a. [L. olfactus, p. p. of olfacere to smell; olere to have a smell + facere to make. See Odor, and Fact.] (Physiol.) Of, pertaining to, or connected with, the sense of smell; as, the olfactory nerves; the olfactory cells.
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Olfactory organ (Anat.), an organ for smelling. In vertebrates the olfactory organs are more or less complicated sacs, situated in the front part of the head and lined with epithelium innervated by the olfactory (or first cranial) nerves, and sensitive to odoriferous particles conveyed to it in the air or in water.
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Olfactory
Ol*fac"to*ry (?), n.; pl. Olfactories (&unr_;). An olfactory organ; also, the sense of smell; -- usually in the plural.
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Olfersia
Olfersia prop. n. genus consisting of one species; in some classification systems it is included in the genus Polyboatrya.
Syn. -- genus Olfersia.
[WordNet 1.5]

Oliban
Ol"i*ban (?), n. (Chem.) See Olibanum.
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Olibanum
O*lib"a*num (?), n. [LL., fr. Ar. al-luban frankincense; cf. Gr. &unr_;, &unr_;, of Semitic origin.] The fragrant gum resin of various species of Boswellia; Oriental frankincense.
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Olibene
Ol"i*bene (?), n. (Chem.) A colorless mobile liquid of a pleasant aromatic odor obtained by the distillation of olibanum, or frankincense, and regarded as a terpene; -- called also conimene.
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Olidous
Olid
{ Ol"id (?), Ol"i*dous (?), } a. [L. olidus, fr. olere to smell.] Having a strong, disagreeable smell; fetid. [Obs.] Boyle. Sir T. Browne.
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Olifant
Ol"i*fant (?), n. [OF.] 1. An elephant. [Obs.]
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2. An ancient horn, made of ivory.
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Oligandrous
Ol`i*gan"drous (?), a. [Oligo- + Gr. &unr_;, &unr_;, man, male.] (Bot.) Having few stamens.
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Oliganthous
Ol`i*gan"thous (?), a. [Oligo- + Gr. 'a`nqos flower.] (Bot.) Having few flowers.
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Oligarch
Ol`i*garch (?), n. A member of an oligarchy; one of the rulers in an oligarchical government.
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Oligarchal
Ol`i*gar"chal (?), a. Oligarchic. Glover.
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Oligarchical
Oligarchic
{ Ol`i*gar"chic (?), Ol`i*gar"chic*al, } a. [Gr. &unr_;: cf. F. oligarchique. See Oligarchy.] Of or pertaining to oligarchy, or government by a few.Oligarchical exiles.” Jowett (Thucyd.).
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Oligarchist
Ol"i*gar`chist (?), n. An advocate or supporter of oligarchy.
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Oligarchy
Ol"i*gar"chy (?), n.; pl. Oligarchies (#). [Gr. &unr_;; 'oli`gos few, little + 'a`rchein to rule, govern: cf. F. oligarchie.] A form of government in which the supreme power is placed in the hands of a few persons; also, those who form the ruling few.
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All oligarchies, wherein a few men domineer, do what they list. Burton.
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Oligist
Ol"i*gist (?), n. [See Oligist, a.] (Min.) Hematite or specular iron ore; -- prob. so called in allusion to its feeble magnetism, as compared with magnetite.
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Oligistic
Oligist
{ Ol"i*gist (?), Ol`i*gis"tic (?), } a. [Gr. &unr_;, superl. of 'oli`gos few, little: cf. F. oligiste.] (Min.) Of or pertaining to hematite.
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Oligo-
Ol"i*go- (?). A combining form from Gr. 'oli`gos, few, little, small.
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Oligocene
Ol"i*go*cene (?), a. [Oligo- + Gr. &unr_; new, recent.] (Geol.) Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. -- n. The Oligocene period. See the Chart of Geology.
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Oligochaeta
Oligochaeta
Ol`i*go*chae"ta, Ol`i*go*chae"ta (?), prop. n. pl. [NL., fr. Gr. 'oli`gos little, pl., few + &unr_; hair.] (Zool.) An order of Annelida which includes the earthworms and related species, including some small freshwater species.
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oligochaete
oligochaete n. Any of an order of hermaphroditic terrestrial and aquatic annelids (including the earthworms) having bristles borne singly along the length of the body; a member of the Oligochaeta.
Syn. -- oligochaete worm.
[WordNet 1.5]

oligochaetous
ol`i*go*chae"tous n. Of or pertaining to the Oligochaeta. [archaic]
Syn. -- Oligochete.
[PJC]

oligochete
ol"i*go*chete (?), a. (Zool.) Of or pertaining to the Oligochaeta. [archaic]
Syn. -- oligochaetous.
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Oligoclase
Ol"i*go*clase (?), n. [Oligo- + Gr. &unr_; fracture, fr. &unr_; to break.] (Min.) A triclinic soda-lime feldspar. See Feldspar.
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oligomer
o*lig"o*mer (?), n. (Chem.) A molecule composed of a small number of linked monomer units; a short polymer; -- compounds called oligomers have less than one hundred monomer units and usually less than thirty. Oligomers of increasing length are called dimer, trimer, tetramer, pentamer, hexamer, heptamer, octamer, nonamer, decamer, etc. In colloquial laboratory jargon, they may also be referred to as nine-mer, ten-mer, eleven-mer, twelve-mer, etc., especially for oligomers of greater than eight units.
[PJC]

Oligomerous
Ol`i*gom"er*ous (?), a. [Oligo- + Gr. me`ros part.] (Bot.) Having few members in each set of organs; as, an oligomerous flower.
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Oligomyoid
Ol`i*go"my*oid (?), a. [Oligo- + Gr. &unr_;, &unr_;, a muscle + -oid.] (Anat.) Having few or imperfect syringeal muscles; -- said of some passerine birds (Oligomyodi).
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Oligopetalous
Ol`i*go*pet"al*ous (?), a. [Oligo- + petal.] (Bot.) Having few petals.
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Oligosepalous
Ol`i*go*sep"al*ous (?), a. [Oligo- + sepal.] (Bot.) Having few sepals.
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Oligosiderite
Ol`i*go*sid"er*ite (?), n. [Oligo- + siderite.] (Min.) A meteorite characterized by the presence of but a small amount of metallic iron.
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Oligospermous
Ol`i*go*sper"mous (?), a. [Oligo- + Gr. spe`rma a seed.] (Bot.) Having few seeds.
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Oligotokous
Ol`i*got"o*kous (?), a. [Oligo- + Gr. &unr_; offspring.] (Zool.) Producing few young.
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Olio
O"li*o (ō"l&ibreve_;*&ouptack_; or ōl"y&ouptack_;), n. [Sp. olla a round earthen pot, a dish of boiled or stewed meat, fr. L. olla a pot, dish. Cf. Olla, Olla-podrida.] 1. A dish of stewed meat of different kinds. [Obs.]
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Besides a good olio, the dishes were trifling. Evelyn.
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2. A mixture; a medley. Dryden.
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3. (Mus.) A collection of miscellaneous pieces.
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Olitory
Ol"i*to*ry (?), a. [L. olitorius belonging to a kitchen gardener, or to vegetables, fr. olitor a kitchen gardener, fr. olus, oleris, vegetables.] Of or pertaining to, or produced in, a kitchen garden; used for kitchen purposes; as, olitory seeds.
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At convenient distance towards the olitory garden. Evelyn.
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Oliva
O*li"va (?), n. [L. an olive.] (Zool.) A genus of polished marine gastropod shells, chiefly tropical, and often beautifully colored.
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Olivaceous
Ol`i*va"ceous (?), a. [L. oliva olive.] Resembling the olive; of the color of the olive; olive-green.
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Olivary
Ol"i*va*ry (?), a. [L. olivarius belonging to olives, fr. oliva an olive: cf. F. olivaire.] (Anat.) Like an olive.
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Olivary body (Anat.), an oval prominence on each side of the medulla oblongata; -- called also olive.
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Olivaster
Ol`i*vas"ter (?), a. [L. oliva olive: cf. F. olivâtre.] Of the color of the olive; tawny. Sir T. Herbert.
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Olive
Ol"ive (?), n. [F., fr. L. oliva, akin to Gr. &unr_;. See Oil.] 1. (Bot.) (a) A tree (Olea Europaea) with small oblong or elliptical leaves, axillary clusters of flowers, and oval, one-seeded drupes. The tree has been cultivated for its fruit for thousands of years, and its branches are the emblems of peace. The wood is yellowish brown and beautifully variegated. (b) The fruit of the olive. It has been much improved by cultivation, and is used for making pickles. Olive oil is pressed from its flesh.
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2. (Zool.) (a) Any shell of the genus Oliva and allied genera; -- so called from the form. See Oliva. (b) The oyster catcher. [Prov. Eng.]
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3. (a) The color of the olive, a peculiar dark brownish, yellowish, or tawny green. (b) One of the tertiary colors, composed of violet and green mixed in equal strength and proportion.
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4. (Anat.) An olivary body. See under Olivary.
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5. (Cookery) A small slice of meat seasoned, rolled up, and cooked; as, olives of beef or veal.
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&hand_; Olive is sometimes used adjectively and in the formation of self-explaining compounds; as, olive brown, olive green, olive-colored, olive-skinned, olive crown, olive garden, olive tree, olive yard, etc.
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Bohemian olive (Bot.), a species of Elaeagnus (Elaeagnus angustifolia), the flowers of which are sometimes used in Southern Europe as a remedy for fevers. -- Olive branch. (a) A branch of the olive tree, considered an emblem of peace. (b) (Fig.): A child. -- to hold out an olive branch, to offer to make peace (with a rival or enemy). -- Olive brown, brown with a tinge of green. -- Olive green, a dark brownish green, like the color of the olive. -- Olive oil, an oil expressed from the ripe fruit of the olive, and much used as a salad oil, also in medicine and the arts. -- Olive ore (Min.), olivenite. -- Wild olive (Bot.), a name given to the oleaster or wild stock of the olive; also variously to several trees more or less resembling the olive.
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Olive
Ol"ive, a. Approaching the color of the olive; of a peculiar dark brownish, yellowish, or tawny green.
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Olived
Ol"ived (?), a. Decorated or furnished with olive trees. [R.] T. Warton.
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Olivenite
O*liv"en*ite (?), n. (Min.) An olive-green mineral, a hydrous arseniate of copper (Cu2(AsO4)(OH)); olive ore.
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Oliver
Ol"i*ver (?), n. 1. [OF. oliviere.] An olive grove. [Obs.] Chaucer.
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2. [F. olivier.] An olive tree. [Obs.] Chaucer.
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Oliver
Ol"i*ver, n. A small tilt hammer, worked by the foot.
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Oliverian
Ol`i*ve"ri*an (?), n. (Eng. Hist.) An adherent of Oliver Cromwell. Macaulay.
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Olivewood
Ol`ive*wood" (?), n. (Bot.) (a) The wood of the olive. (b) An Australian name given to the hard white wood of certain trees of the genus Elaeodendron, and also to the trees themselves.
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Olivil
Ol`i*vil (?), n. [Cf. F. olivile.] (Chem.) A white crystalline substance, obtained from an exudation from the olive, and having a bitter-sweet taste and acid proporties. [Written also olivile.] Gregory.
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Olivin
Ol"i*vin (?), n. (Chem.) A complex bitter gum, found on the leaves of the olive tree; -- called also olivite.
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Olivine
Ol"i*vine (?), n. [Cf. F. olivine.] (Min.) A common name of the yellowish green mineral chrysolite, esp. the variety found in eruptive rocks. It is a silicate of magnesium and iron ((Mg,Fe)SiO4).
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Olivite
Ol"i*vite (?), n. (Chem.) See Olivin.
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Olla
Ol"la (?), n. [See Olio.] 1. A pot or jar having a wide mouth; a cinerary urn, especially one of baked clay.
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2. A dish of stewed meat; an olio; an olla-podrida.
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Olla-podrida
Ol`la-po*dri"da (?), n. [Sp., lit., a rotten pot. See Olio.] 1. A favorite Spanish dish, consisting of a mixture of several kinds of meat chopped fine, and stewed with vegetables.
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2. Any incongruous mixture or miscellaneous collection; an olio. B. Jonson.
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olm
olm n. A European cave-dwelling aquatic salamander (Proteus anguinus) with permanent external gills.
Syn. -- Proteus anguinus.
[WordNet 1.5]

Ology
Ol"o*gy (?), n. [See -logy.] A colloquial or humorous name for any science or branch of knowledge.
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He had a smattering of mechanics, of physiology, geology, mineralogy, and all other ologies whatsoever. De Quincey.
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Olpe
Ol"pe (?), n. [NL., fr. Gr. &unr_;.] Originally, a leather flask or vessel for oils or liquids; afterward, an earthenware vase or pitcher without a spout.
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Olusatrum
O*lu"sa*trum (?), n. [L. holusatrum, olusatrum; olus garden herb + ater black.] (Bot.) An umbelliferous plant, the common Alexanders of Western Europe (Smyrnium Olusatrum).
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Olympiad
O*lym"pi*ad (&ouptack_;*l&ibreve_;m"p&ibreve_;*ăd), n. [L. olympias, -adis, Gr. 'olympia`s, 'olympia`dos, fr. 'O`lympos Olympus, a mountain in Macedonia: cf. F. olympiade.] 1. (Greek Antiq.) A period of four years, by which the ancient Greeks reckoned time, being the interval from one celebration of the Olympic games to another, beginning with the victory of Corœbus in the foot race, which took place in the year 776 b. c.; as, the era of the olympiads.
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2. The quadrennial celebration of the modern Olympic games; as, the first Olympiad (1906). See Olympics.
Syn. -- Olympic games, Olympics.
[Webster 1913 Suppl.]

Olympic
Olympian
{ O*lym"pi*an (&ouptack_;*l&ibreve_;m"p&ibreve_;*&aitalic_;n), O*lym"pic (&ouptack_;*l&ibreve_;m"p&ibreve_;k), } a. [L. Olympius, Olympicus, Gr. 'Oly`mpios, 'Olympiko`s, fr. 'O`lympos: cf. F. olympique. See Olympiad.] Of or pertaining to Olympus, a mountain of Thessaly, fabled as the seat of the gods, or to Olympia, a small plain in Elis.
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Olympian
O*lym"pi*an (&ouptack_;*l&ibreve_;m"p&ibreve_;*&aitalic_;n), prop. n. [L. See 1st Olympian, a.] A god who dwells on Olympus.
[PJC]

2. An inhabitant of Olympia.
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3. An athlete who competes in the Olympics.
[PJC]

Olympian
O*lym"pi*an (&ouptack_;*l&ibreve_;m"p&ibreve_;*&aitalic_;n), a. [L. See 1st Olympian, n.] Pertaining to, characteristic of, or fitting for one of the gods on Olympus; grand, majestic, or aloof.
[PJC]

Olympianism
O*lym"pi*an*ism (?), n. Worship of the Olympian gods, esp. as a dominant cult or religion.
[Webster 1913 Suppl.]

Olympian games
Olympic games
{ O*lym"pic games, or O*lym"pi*an games }. (Greek Antiq.), The greatest of the national festivals of the ancient Greeks, consisting of athletic games and races, dedicated to Olympian Zeus, celebrated once in four years at Olympia, and continuing five days.
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Olympics
Olympic games
{ O*lym"pic games, or O*lym"pics} A modified revival of the ancient Olympian games, consisting of international athletic games, races, etc., now held once in four years, the first having been at Athens in 1896. There are now two sets of modern Olympic games, the summer games and the winter games. Both had been held every four years, in the same year, but in 1998 for the first time the winter games began to be held two years after the summer games, though each series is still held only once every four years. The number and types of sports contests held at the olympics has greatly expanded from the original number.
[Webster 1913 Suppl. +PJC]

Olympionic
O*lym`pi*on"ic (?), n. [Gr. &unr_; a conqueror in the Olympic games.] An ode in honor of a victor in the Olympic games. [R.] Johnson.
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Olympus
Olympus prop. n. A mountain in Northeastern Greece; -- it was believed by ancient Greeks to be the dwelling place of the gods.
Syn. -- Mount Olympus, Mt. Olympus, Olimbos.
[WordNet 1.5]

Om
Om (?), interj. & n. [Also Aum, Um.] [Skr. ōm.] A mystic syllable or ejaculation used by Hindus and Buddhists in religious rites, -- orig. among the Hindus an exclamation of assent, like Amen, then an invocation, and later a symbol of the trinity formed by Vishnu, Siva, and Brahma. -- Om mani padme hun, a sacred formula of buddhism (esp. of the Lamaists) translated “O, the Jewel in the Lotus, Amen,” and referring to Amitabha, who is commonly represented as standing or sitting within a lotus.
[Webster 1913 Suppl.]

-oma
-o"ma (?) suff. [Gr. &unr_;, &unr_;.] A suffix used in medical terms to denote a morbid condition of some part, usually some kind of tumor; as in fibroma, glaucoma.
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Omagra
Om"a*gra (?), n. [NL., fr. Gr. &unr_; shoulder + &unr_; seizure.] (Med.) Gout in the shoulder.
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Omahas
O"ma*has" (?), prop. n. pl.; sing. Omaha (&unr_;). (Ethnol.) A tribe of Indians who inhabited the south side of the Missouri River. They are now partly civilized and occupy a reservation in Nebraska.
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Omander wood
O*man"der wood` (?). [Etymol. uncertain.] (Bot.) The wood of Diospyros ebenaster, a kind of ebony found in Ceylon.
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Omani
Omani prop. adj. Of or relating to Oman or its people; as, Omani oil producers; Omani ports.
[WordNet 1.5]

Omani
Omani prop. n. A native or inhabitant of Oman.
[WordNet 1.5]

Omasum
O*ma"sum (?), n. [L.] (Anat.) The third division of the stomach of ruminants. See Manyplies, and Illust. under Ruminant.
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Ombre
Omber
{ Om"ber, Om"bre} (?), n. [F. hombre, fr. Sp. hombre, lit., a man, fr. L. homo. See Human.] A game at cards, borrowed from the Spaniards, and usually played by three persons. Pope.
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When ombre calls, his hand and heart are free,
And, joined to two, he fails not to make three.
Young.
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Ombre
Om"bre, n. [F., of uncertain origin.] (Zool.) A large Mediterranean food fish (Umbrina cirrhosa): -- called also umbra, and umbrine.
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Ombrometer
Om*brom"e*ter (?), n. [Gr. &unr_; rain + -meter: cf. F. ombrométre.] (Meteorol.) An instrument for measuring the rain that falls; a rain gauge.
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Omdurman
Omdurman prop. n. A battle (1898) in which an Anglo-Egyptian army under Lord Kitchener defeated the Sudanese.
Syn. -- battle of Omdurman.
[WordNet 1.5]

omega
o*me"ga (ō*mē"g&adot_; or ō*mā"g&adot_; or ō"m&euptack_;*g&adot_;; 277), n. [NL., fr. Gr. 'w^ me`ga, i.e., the great or long o. Cf. Mickle.] 1. The last letter of the Greek alphabet. See Alpha.
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2. The last; the end; hence, death.
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Omega! thou art Lord,” they said. Tennyson.
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Alpha and Omega, the beginning and the ending; hence, the chief, the whole. Rev. i. 8.
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The alpha and omega of science. Sir J. Herschel.
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Omegoid
O*me"goid (?), a. [Omega + -oid.] Having the form of the Greek capital letter Omega (Ω).
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omelette
omelet
om"e*let, om"e*lette (?), n. [F. omelette, OF. amelette, alumete, alumelle, perh. fr. L. lamella. Cf. Lamella.] (Cookery) A dish consisting of eggs beaten up with a little flour, etc., and cooked in a frying pan until just set into a semisolid consistency; it may be folded around e.g. ham or cheese or jelly; as, a plain omelet. When additional ingredients are mixed in, the names of the ingredients may be mentioned in the name of the omelet; as, a ham and cheese omelet; a bacon and cheese omelet
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western omelet an omelet containing chopped pieces of ham, onion, and green peppers.
[PJC]

Omen
O"men (?), n. [L. omen, the original form being osmen, according to Varro.] An occurrence supposed to portend, or show the character of, some future event; any indication or action regarded as a foreshowing; a foreboding; a presage; an augury.
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Bid go with evil omen, and the brand
Of infamy upon my name.
Milton.
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Omen
O"men, v. t. [imp. & p. p. Omened (?); p. pr. & vb. n. Omening.] To divine or to foreshow by signs or portents; to have omens or premonitions regarding; to predict; to augur; as, to omen ill of an enterprise.
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The yet unknown verdict, of which, however, all omened the tragical contents. Sir W. Scott.
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Omened
O"mened (?), a. Attended by, or containing, an omen or omens; as, happy-omened day; an ill-omened venture.
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Omental
O*men"tal (?), a. (Anat.) Of or pertaining to an omentum or the omenta.
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Omentum
O*men"tum (?), n.; pl. Omenta (#). [L.] (Anat.) A free fold of the peritoneum, or one serving to connect viscera, support blood vessels, etc.; an epiploon.
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&hand_; The great, or gastrocolic, omentum forms, in most mammals, a great sac, which is attached to the stomach and transverse colon, is loaded with fat, and covers more or less of the intestines; the caul. The lesser, or gastrohepatic, omentum connects the stomach and liver and contains the hepatic vessels. The gastrosplenic omentum, or ligament, connects the stomach and spleen.
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Omer
O"mer (?), n. [Cf. Homer.] A Hebrew measure, the tenth of an ephah. See Ephah. Ex. xvi. 36.
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Omicron
O*mi"cron (?), n. [Written also omikron.] [NL., fr. Gr. Ο ο. See Micro-.] Lit., the little, or short, O, o; the fifteenth letter of the Greek alphabet.
[Webster 1913 Suppl.]

Omiletical
Om`i*let"ic*al (?), a. Homiletical. [Obs.]
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Ominate
Om"i*nate (?), v. t. & i. [L. ominatus, p. p. of ominari to presage, fr. omen.] To presage; to foreshow; to foretoken. [Obs.] Dr. H. More.
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Omination
Om`i*na"tion (?), n. [L. ominatio.] The act of ominating; presaging. [Obs.] Fuller.
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Ominous
Om"i*nous (?), a. [L. ominosus, fr. omen. See Omen.] Of or pertaining to an omen or to omens; being or exhibiting an omen; significant; portentous; -- formerly used both in a favorable and unfavorable sense; now chiefly in the latter; foreboding or foreshowing evil; inauspicious; as, an ominous dread.
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He had a good ominous name to have made a peace. Bacon.
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In the heathen worship of God, a sacrifice without a heart was accounted ominous. South.
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-- Om"i*nous*ly, adv. -- Om"i*nous*ness, n.
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Omissible
O*mis"si*ble (?), a. Capable of being omitted; that may be omitted.
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Omission
O*mis"sion (?), n. [L. omissio: cf. F. omission. See Omit.] 1. The act of omitting; neglect or failure to do something required by propriety or duty.
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The most natural division of all offenses is into those of omission and those of commission. Addison.
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2. That which is omitted or is left undone.
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Omissive
O*mis"sive (?), a. [See Omit.] Leaving out; omitting. Bp. Hall. -- O*mis"sive*ly, adv.
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Omit
O*mit" (?), v. t. [imp. & p. p. Omitted; p. pr. & vb. n. Omitting.] [L. omittere, omissum; ob (see Ob- + mittere to cause to go, let go, send. See Mission.] 1. To let go; to leave unmentioned; not to insert or name; to drop.
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These personal comparisons I omit. Bacon.
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2. To forbear or fail to perform or to make use of; to leave undone; to neglect; to pass over.
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Her father omitted nothing in her education that might make her the most accomplished woman of her age. Addison.
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Omittance
O*mit"tance (?), n. The act of omitting, or the state of being omitted; forbearance; neglect. Shak.
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Omitter
O*mit"ter (?), n. One who omits. Fuller.
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Ommateal
Om`ma*te"al (?), a. (Zool.) Of or pertaining to an ommateum.
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Ommateum
Om`ma*te"um (?), n.; pl. Ommatea (#). [NL., fr. Gr. &unr_;, &unr_;, the eye.] (Zool.) A compound eye, as of insects and crustaceans.
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Ommatidium
Om`ma*tid"i*um (?), n.; pl. Ommatidia (#). [NL., dim. of Gr. &unr_;, &unr_;, the eye.] (Zool.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates; one of the eyes of an ommateum.
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Omni-
Om"ni- (?). [L. omnis all.] A combining form denoting all, every, everywhere; as in omnipotent, all-powerful; omnipresent; omnivorous.
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Omnibus
Om"ni*bus (?), n. [L., for all, dat. pl. from omnis all. Cf. Bus.] 1. A long vehicle, having seats for many people; a bus.
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In the 1913 Webster the term omnibus was especially applied to, a vehicle with seats running lengthwise, used in conveying passengers short distances.
[PJC]

2. (Glass Making) A sheet-iron cover for articles in a leer or annealing arch, to protect them from drafts.
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3. (Printing) A volume containing collected and reprinted works of a single author or on a single theme.
[PJC]

omnibus
om"ni*bus (?), a. Pertaining to or dealing with a variety of topics at one time; as, omnibus legislation; an omnibus budget bill.
[PJC]

Omnibus bill, a legislative bill which provides for a number of miscellaneous enactments or appropriations. [Parliamentary Cant, U.S.] -- Omnibus box, a large box in a theater, on a level with the stage and having communication with it. [Eng.] Thackeray.
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Omnicorporeal
Om`ni*cor*po"re*al (?), a. [Omni- + corporeal.] Comprehending or including all bodies; embracing all substance. [R.] Cudworth.
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Omniety
Om*ni"e*ty (?), n. That which is all-pervading or all-comprehensive; hence, the Deity. [R.]
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Omniety formed nullity into an essence. Sir T. Browne.
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Omnifarious
Om`ni*fa"ri*ous (?), a. [L. omnifarius; omnis all + -farius. Cf. Bifarious.] Of all varieties, forms, or kinds.Omnifarious learning.” Coleridge.
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Omniferous
Om*nif"er*ous (?), a. [L. omnifer; omnis all + ferre to bear.] All-bearing; producing all kinds.
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Omnific
Om*nif"ic (?), a. [Omni- + L. -ficare (in comp.) to make.] All-creating. “The omnific word.” Milton.
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Omniform
Om"ni*form (?), a. [L. omniformis; omnis all + forma form: cf. F. omniforme.] Having every form or shape. Berkeley.
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Omniformity
Om`ni*for"mi*ty (?), n. The condition or quality of having every form. Dr. H. More.
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Omnify
Om"ni*fy (?), v. t. [Omni- + -fy.] To render universal; to enlarge. [R.]
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Omnify the disputed point into a transcendent, and you may defy the opponent to lay hold of it. Coleridge.
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Omnigenous
Om*nig"e*nous (?), a. [L. omniqenus; omnis all + genus kind.] Consisting of all kinds. [R.]
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Omnigraph
Om"ni*graph (?), n. [Omni- + -graph.] A pantograph. [R.]
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Omniparient
Om`ni*pa"ri*ent (?), a. [L. omniparens all-producing; omnis all + parere to bring forth.] Producing or bringing forth all things; all-producing. [R.]
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Omniparity
Om`ni*par"i*ty (?), n. [Omni- + -parity.] Equality in every part; general equality.
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Omniparous
Om*nip"a*rous (?), a. [See Omniparient.] Producing all things; omniparient.
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Omnipatient
Om`ni*pa"tient (?), a. [Omni- + patient.] Capable of enduring all things. [R.] Carlyle.
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Omnipercipiency
Omnipercipience
{ Om`ni*per*cip"i*ence (?), Om`ni*per*cip"i*en*cy (?), } n. Perception of everything.
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Omnipercipient
Om`ni*per*cip"i*ent (?), a. [Omni- + percipient.] Perceiving everything. Dr. H. More.
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Omnipotency
Omnipotence
{ Om*nip"o*tence (?), Om*nip"o*ten*cy (?), } n. [L. omnipotentia: cf. F. omnipotence.] 1. The state of being omnipotent; almighty power; hence, one who is omnipotent; the Deity.
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Will Omnipotence neglect to save
The suffering virtue of the wise and brave?
Pope.
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2. Unlimited power of a particular kind; as, love's omnipotence. Denham.
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Omnipotent
Om*nip"o*tent (?), a. [F., fr.L. omnipotens, -entis; omnis all + potens powerful, potent. See Potent.] 1. Able in every respect and for every work; unlimited in ability; all-powerful; almighty; as, the Being that can create worlds must be omnipotent.
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God's will and pleasure and his omnipotent power. Sir T. More.
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2. Having unlimited power of a particular kind; as, omnipotent love. Shak.
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The Omnipotent, The Almighty; God. Milton.
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Omnipotently
Om*nip"o*tent*ly, adv. In an omnipotent manner.
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Omnipresence
Om`ni*pres"ence (&obreve_;m`n&ibreve_;*pr&ebreve_;z"&eitalic_;ns), n. [Cf. F. omniprésence.] Presence in every place at the same time; unbounded or universal presence; ubiquity.
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His omnipresence fills
Land, sea, and air, and every kind that lives.
Milton.
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Omnipresency
Om`ni*pres"en*cy (?), n. Omnipresence. [Obs.]
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Omnipresent
Om`ni*pres"ent (?), a. [Omni- + present: cf. F. omniprésent.] Present in all places at the same time; ubiquitous; as, the omnipresent Jehovah. Prior.
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Omnipresential
Om`ni*pre*sen"tial (?), a. Implying universal presence. [R.] South.
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Omniprevalent
Om`ni*prev"a*lent (?), a. [Omni- + prevalent.] Prevalent everywhere or in all things. Fuller.
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Omniscience
Om*nis"cience (?), n. [Cf. F. omniscience.] The quality or state of being omniscient; the quality of knowing everything; -- an attribute peculiar to God. Dryden.
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Omnisciency
Om*nis"cien*cy (?), n. Omniscience.
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Omniscient
Om*nis"cient (?), a. [Omni- + L. sciens, -entis, p. pr. of scire to know: cf. F. omniscient. See Science.] Having universal knowledge; knowing all things; infinitely knowing or wise; as, the omniscient God. -- Om*nis"cient*ly, adv.
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For what can scape the eye
Of God all-seeing, or deceive his heart
Omniscient?
Milton.
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Omniscious
Om*nis"cious (?), a. [L. omniscius. See Omniscient.] All-knowing. [Obs.] Hakewill.
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Omnispective
Om`ni*spec"tive (?), a. [Omni- + L. spectus, p. p. of specere, spicere, to view.] Beholding everything; capable of seeing all things; all-seeing. [R.]Omnispective Power!” Boyse.
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Omnium
Om"ni*um (?), n. [L., of all, gen. pl. of omnis all.] (Eng. Stock Exchange) The aggregate value of the different stocks in which a loan to government is now usually funded. M'Culloch.
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Omnium-gatherum
Om`ni*um-gath"er*um (?), n. [A macaronic compound of L. omnium, gen. pl. of omnis all, and E. gather.] A miscellaneous collection of things or persons; a confused mixture; a medley; a hodgepodge. [Colloq. & Humorous] Selden.
Syn. -- hotchpotch, odds and ends, farrago, motley collection.
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Omnivagant
Om*niv"a*gant (?), a. [Omni + L. vagans, p. pr. of vagari to wander.] Wandering anywhere and everywhere. [R.]
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Omnivora
Om*niv"o*ra (?), n. pl. [NL. See Omnivorous.] (Zool.) A group of ungulate mammals including the hog and the hippopotamus. The term is also sometimes applied to the bears, and to certain passerine birds.
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Omnivorous
Om*niv"o*rous (?), a. [L. omnivorus; omnis all + vorate to eat greedily. See Voracious.] 1. All-devouring; eating everything indiscriminately; as, omnivorous vanity; an omnivorous intellect.
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2. Specifically: (Zool.), Eating both animal and vegetable food.
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-- Om*niv"o*rous*ness, n.
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Omo-
O"mo- (?). [Gr. &unr_; the shoulder.] A combining form used in anatomy to indicate connection with, or relation to, the shoulder or the scapula.
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Omohyoid
O`mo*hy"oid (?), a. [Omo- + hyoid.] (Anat.) Of or pertaining to the shoulder and the hyoid bone; as, the omohyoid muscle.
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Omophagic
O"mo*phag"ic (?), a. [Gr. 'wmofa`gos; 'wmo`s raw + fagei^n to eat.] Eating raw flesh; using uncooked meat as food; as, omophagic feasts, rites.
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Omoplate
Om"o*plate (?), n. [F., from Gr. &unr_;. See Omo-, and Plate.] (Anat.) The shoulder blade, or scapula.
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Omostegite
O*mos"te*gite (?), n. [Omo- + Gr. &unr_; a roof.] (Zool.) The part of the carapace of a crustacean situated behind the cervical groove.
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Omosternal
O`mo*ster"nal (?), a. (Anat.) Of or pertaining to the omosternum.
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Omosternum
O`mo*ster"num (?), n. [Omo- + sternum.] (Anat.) (a) The anterior element of the sternum which projects forward from between the clavicles in many batrachians and is usually tipped with cartilage. (b) In many mammals, an interarticular cartilage, or bone, between the sternum and the clavicle.
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Omphacine
Om"pha*cine (?), a. [Gr. &unr_;, from &unr_; an unripe grape or olive: cf. F. omphacin.] Of, pertaining to, or expressed from, unripe fruit; as, omphacine oil.
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Omphalic
Om*phal"ic, a. [Gr. &unr_; having a boss, bossy, fr. &unr_; the navel. See Navel.] (Anat.) Of or pertaining to the umbilicus, or navel.
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Omphalo-
Om"pha*lo- (?). [Gr. &unr_; the navel.] A combining form indicating connection with, or relation to, the umbilicus, or navel.
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Omphalocele
Om"pha*lo*cele` (?), n. [Gr. &unr_; the navel + &unr_; a tumor: cf. F. omphalocéle.] (Med.) A hernia at the navel.
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Omphalode
Om"pha*lode (?), n. [Omphalo- + Gr. e'i^dos form.] (Bot.) The central part of the hilum of a seed, through which the nutrient vessels pass into the rhaphe or the chalaza; -- called also omphalodium.
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Omphalomancy
Om"pha*lo*man"cy (?), n. [Omphalo- + -mancy.] Divination by means of a child's navel, to learn how many children the mother may have. Crabb.
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Omphalomesaraic
Om`pha*lo*mes`a*ra"ic (?), a. [Omphalo- + mesaraic.] (Anat.) Omphalomesenteric.
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Omphalomesenteric
Om`pha*lo*mes`en*ter"ic (?), a. [Omphalo- + mesenteric.] (Anat.) Of or pertaining to the umbilicus and mesentery; omphalomesaraic; as, the omphalomesenteric arteries and veins of a fetus.
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Omphalopsychite
Om`pha*lop"sy*chite (?), n. [Omphalo- + Gr. &unr_; breath, spirit, soul: cf. F. omphalopsyque.] (Eccl.Hist.) A name of the Hesychasts, from their habit of gazing upon the navel.
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Omphaloptic
Omphalopter
{ Om`pha*lop"ter (?), Om`pha*lop"tic (?), } n. [Gr. &unr_; the navel + &unr_; one who looks, &unr_; belonging to sight: cf. F. omphaloptre.] An optical glass that is convex on both sides. [Obs.] Hutton.
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Omphalos
Om"pha*los (?), n. [L., fr. Gr. &unr_;.] (Anat.) The navel.
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Omphalotomy
Om`pha*lot"o*my (?), n. [Gr. &unr_;; &unr_; the navel + te`mnein to cut: cf. F. omphalotomie.] (Surg.) The operation of dividing the navel-string.
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Omy
O"my (ō"m&ybreve_;), a. Mellow, as land. [Prov. Eng.] Ray.
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On
On (&obreve_;n), prep. [OE. on, an, o, a, AS. on, an; akin to D. aan, OS. & G. an, OHG. ana, Icel. ā, Sw. å, Goth. ana, Russ. na, L. an-, in anhelare to pant, Gr. 'ana`, Zend ana. √195. Cf. A-, 1, Ana-, Anon.] The general signification of on is situation, motion, or condition with respect to contact or support beneath; as: --
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1. At, or in contact with, the surface or upper part of a thing, and supported by it; placed or lying in contact with the surface; as, the book lies on the table, which stands on the floor of a house on an island.
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I stood on the bridge at midnight. Longfellow.
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2. To or against the surface of; -- used to indicate the motion of a thing as coming or falling to the surface of another; as, rain falls on the earth.
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Whosoever shall fall on this stone shall be broken. Matt. xxi. 44.
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3. Denoting performance or action by contact with the surface, upper part, or outside of anything; hence, by means of; with; as, to play on a violin or piano. Hence, figuratively, to work on one's feelings; to make an impression on the mind.
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4. At or near; adjacent to; -- indicating situation, place, or position; as, on the one hand, on the other hand; the fleet is on the American coast.
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5. In addition to; besides; -- indicating multiplication or succession in a series; as, heaps on heaps; mischief on mischief; loss on loss; thought on thought. Shak.
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6. Indicating dependence or reliance; with confidence in; as, to depend on a person for assistance; to rely on; hence, indicating the ground or support of anything; as, he will promise on certain conditions; to bet on a horse; based on certain assumptions.
[1913 Webster +PJC]

7. At or in the time of; during; as, on Sunday we abstain from labor. See At (synonym).
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8. At the time of; -- often conveying some notion of cause or motive; as, on public occasions, the officers appear in full dress or uniform; the shop is closed on Sundays. Hence, in consequence of, or following; as, on the ratification of the treaty, the armies were disbanded; start on the count of three.
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9. Toward; for; -- indicating the object of some passion; as, have pity or compassion on him.
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10. At the peril of, or for the safety of. “Hence, on thy life.” Dryden.
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11. By virtue of; with the pledge of; -- denoting a pledge or engagement, and put before the thing pledged; as, he affirmed or promised on his word, or on his honor.
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12. To the account of; -- denoting imprecation or invocation, or coming to, falling, or resting upon; as, on us be all the blame; a curse on him.
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His blood be on us and on our children. Matt. xxvii. 25.
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13. In reference or relation to; as, on our part expect punctuality; a satire on society.
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14. Of. [Obs.] “Be not jealous on me.” Shak.
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Or have we eaten on the insane root
That takes the reason prisoner?
Shak.
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&hand_; Instances of this usage are common in our older writers, and are sometimes now heard in illiterate speech.
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15. Occupied with; in the performance of; as, only three officers are on duty; on a journey; on the job; on an assignment; on a case; on the alert.
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16. In the service of; connected with; a member of; as, he is on a newspaper; on a committee.
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&hand_; On and upon are in general interchangeable. In some applications upon is more euphonious, and is therefore to be preferred; but in most cases on is preferable.
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17. In reference to; about; concerning; as, to think on it; to meditate on it.
[PJC]

On a bowline. (Naut.) Same as Closehauled. -- On a wind, or On the wind (Naut.), sailing closehauled. -- On a sudden. See under Sudden. -- On board, On draught, On fire, etc. See under Board, Draught, Fire, etc. -- On it, On't, of it. [Obs. or Colloq.] Shak. -- On shore, on land; to the shore. -- On the road, On the way, On the wing, etc. See under Road, Way, etc. -- On to, upon; on; to; -- sometimes written as one word, onto, and usually called a colloquialism; but it may be regarded in analogy with into.
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They have added the -en plural form on to an elder plural. Earle.
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We see the strength of the new movement in the new class of ecclesiastics whom it forced on to the stage. J. R. Green.
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On
On, adv. [See On, prep.] 1. Forward, in progression; onward; -- usually with a verb of motion; as, move on; go on; the beat goes on. “Time glides on.” Macaulay.
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The path is smooth that leadeth on to danger. Shak.
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2. Forward, in succession; as, from father to son, from the son to the grandson, and so on.
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3. In continuance; without interruption or ceasing; as, sleep on, take your ease; say on; sing on.
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4. Adhering; not off; as in the phrase, “He is neither on nor off,” that is, he is not steady, he is irresolute.
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5. Attached to the body, as clothing or ornament, or for use. “I have boots on.” B. Gonson.
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He put on righteousness as a breastplate. Is. lix. 17.
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6. In progress; proceeding; ongoing; as, a game is on.
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&hand_; On is sometimes used as an exclamation, or a command to move or proceed, some verb being understood; as, on, comrades; that is, go on, move on.
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On and on, continuously; for a long time together. “Toiling on and on and on.” Longfellow.
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Onager
On"a*ger (?), n.; pl. L. Onagri (#), E. Onagers (#). [L. onager, onagrus, Gr. &unr_;.] 1. (Rom. Antiq.) A military engine acting like a sling, which threw stones from a bag or wooden bucket, and was operated by machinery. Fairholt.
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2. (Zool.) A wild ass of central Asia, especially the koulan (Equus hemionus syn. Equus hemippus syn. Equus onager, formely Asinus onager).
[1913 Webster +PJC]

Onagga
O*nag"ga (?), n. (Zool.) The dauw.
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onagon
on"a*gon (&obreve_;*nä"g&obreve_;n), n. A form of drum used by the Chippewa indians.
[Century Dict. 1906]

Onagra
O*nag"ra (?), prop. n. (Bot.) Same as Oenothera, a genus of plants consisting of the evening primrose.
[PJC]

onagra
on"a*gra (?), n. The female of the onager.
[PJC]

Onagrarieous
Onagraceous
{ On`a*gra"ceous (&obreve_;n`&adot_;*grā"shŭs), On`a*gra*ri"e*ous (-gr&auptack_;*rī"&euptack_;*ŭs), } a. [From NL. Onagra an old scientific name of the evening primrose (Œnothera), fr. Gr. 'ona`gra a kind of plant; of uncertain origin.] (Bot.) Pertaining to, or resembling, a natural order of plants (Onagraceae or Onagrarieae), which includes the fuchsia, the willow-herb (Epilobium), and the evening primrose (Œnothera).
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Onanism
O"nan*ism (?), n. [Onan (Gen. xxxviii. 9): cf. F. onanisme.] Self-pollution; masturbation.
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Onappo
O*nap"po (?), n. (Zool.) A nocturnal South American monkey (Callithrix discolor), noted for its agility; -- called also ventriloquist monkey.
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Once
Once (&obreve_;ns), n. (Zool.) The ounce.
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Once
Once (wŭns), adv. [OE. ones, anes, an adverbial form fr. one, on, an, one. See One-, -Wards.] 1. For one time; by limitation to the number one; not twice nor any number of times more than one.
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Ye shall . . . go round about the city once. Josh. vi. 3.
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Trees that bear mast are fruitful but once in two years. Bacon.
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2. At some one period of time; -- used indefinitely.
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My soul had once some foolish fondness for thee. Addison.
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That court which we shall once govern. Bp. Hall.
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3. At any one time; -- often nearly equivalent to ever, if ever, or whenever; as, once kindled, it may not be quenched.
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Wilt thou not be made clean? When shall it once be? Jer. xiii. 27.
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To be once in doubt
Is once to be resolved.
Shak.
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&hand_; Once is used as a noun when preceded by this or that; as, this once, that once. It is also sometimes used elliptically, like an adjective, for once-existing. “The once province of Britain.” J. N. Pomeroy.
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At once. (a) At the same point of time; immediately; without delay. “Stand not upon the order of your going, but go at once.” Shak. “I . . . withdrew at once and altogether.” Jeffrey. (b) At one and the same time; simultaneously; in one body; as, they all moved at once. -- Once and again, once and once more; repeatedly. “A dove sent forth once and again, to spy.” Milton.
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once-over
once-over n. a swift cursory examination or inspection; as, I gave him the once-over.
Syn. -- look-over.
[WordNet 1.5]

onchocerciasis
onchocerciasis n. (Med.) An infection with nematodes of the genus Onchocerca, especially Onchocerca volvulus. Untreated, such infections can cause serious dermatological problems, and in advanced cases may lead to blindness. In certain areas of tropical Africa the blindness caused by onchocerciasis is called river blindness.
[PJC]

Onchorynchus
Onchorynchus prop. n. (Zool.) A genus of fishes including the sockeye salmon; chinook salmon; and coho salmon.
Syn. -- genus Onchorynchus.
[WordNet 1.5]

Oncidium
On*cid"i*um (?), n. [NL.] (Bot.) A genus of tropical orchidaceous plants, the flower of one species of which (Oncidium Papilio) resembles a butterfly.
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Oncograph
On"co*graph (?), n. [Gr. &unr_; bulk + -graph.] (Physiol.) An instrument for registering the changes observable with an oncometer.
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Oncometer
On*com"e*ter (?), n. [Gr. &unr_; bulk + -meter.] (Physiol.) An instrument for measuring the variations in size of the internal organs of the body, as the kidney, spleen, etc.
[1913 Webster]

oncoming
oncoming adj. moving toward one; approaching.
Syn. -- approaching.
[WordNet 1.5]

oncoming
oncoming n. the beginning or early stages; the onset.
Syn. -- onset.
[WordNet 1.5]

Oncost
On"cost`, n. (Accounting) In cost accounting, expenditure which is involved in the process of manufacture or the performance of work and which cannot be charged directly to any particular article manufactured or work done (as where different kinds of goods are produced), but must be allocated so that each kind of goods or work shall bear its proper share. [Brit.]
[Webster 1913 Suppl.]

oncotomy
on*cot"o*my (&obreve_;&nsmacr_;"k&obreve_;t*&ouptack_;*m&ybreve_;), n. [Gr. 'o`gkos bulk, mass + te`mnein to cut: cf. F. oncotomie.] (Surg.) The opening of an abscess, or the removal of a tumor, with a cutting instrument. [Written also onkotomy.] Dunglison.
[1913 Webster]

Ondatra
Ondatra prop. n. A genus of rodents including the muskrat (Ondatra zibethica).
Syn. -- genus Ondatra.
[WordNet 1.5]

onde
onde (&obreve_;nd), n. [AS. anda malice, anger; akin to Icel. andi, önd, breath.] Hatred; fury; envy. [Obs.]
[1913 Webster]

On dit
On` dit" (ôN` d&euptack_;"). [F.] They say, or it is said. -- n. A flying report; rumor; as, it is a mere on dit.
[1913 Webster]

Ondogram
On"do*gram (?), n. [F. onde wave, L. unda + -gram.] (Elec.) The record of an ondograph.
[Webster 1913 Suppl.]

Ondograph
On"do*graph (?), n. [F. onde wave, L. unda + -graph.] (Elec.) An instrument for autographically recording the wave forms of varying currents, esp. rapidly varying alternating currents.
[Webster 1913 Suppl.]

Ondometer
On*dom"e*ter (?), n. [F. onde wave, L. unda + -mater.] An electric wave meter.
[Webster 1913 Suppl.]

Ondoyant
On`do`yant" (?), a. [F., p.pr. of ondoyer to undulate, fr. onde wave, L. unda.] (Art) Wavy; having the surface marked by waves or slightly depressed furrows; as, ondoyant glass.
[Webster 1913 Suppl.]

on-duty
on-duty adj. performing or available for duties; as, her on-duty hours were 11p.m. to 7 a.m.. Opposite of off-duty. [prenominal]
Syn. -- on duty(predicate).
[WordNet 1.5]

-one
-one (ōn). [From Gr. -w`nh, signifying, female descendant.] (Chem.) A suffix indicating that the substance, in the name of which it appears, is a ketone; as, acetone.
[1913 Webster]

-one
-one suff. (Chem.) A termination indicating that the hydrocarbon to the name of which it is affixed belongs to the fourth series of hydrocarbons, or the third series of unsaturated hydrocarbons; as, nonone. [archaic]
[1913 Webster +PJC]

One
One (wŭn), a. [OE. one, on, an, AS. ān; akin to D. een, OS. ēn, OFries. ēn, ān, G. ein, Dan. een, Sw. en, Icel. einn, Goth. ains, W. un, Ir. & Gael. aon, L. unus, earlier oinos, oenos, Gr. o'i`nh the ace on dice; cf. Skr. ēka. The same word as the indefinite article a, an. √ 299. Cf. 2d A, 1st An, Alone, Anon, Any, None, Nonce, Only, Onion, Unit.] 1. Being a single unit, or entire being or thing, and no more; not multifold; single; individual.
[1913 Webster]

The dream of Pharaoh is one. Gen. xli. 25.
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O that we now had here
But one ten thousand of those men in England.
Shak.
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2. Denoting a person or thing conceived or spoken of indefinitely; a certain. “I am the sister of one Claudio” [Shak.], that is, of a certain man named Claudio.
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3. Pointing out a contrast, or denoting a particular thing or person different from some other specified; -- used as a correlative adjective, with or without the.
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From the one side of heaven unto the other. Deut. iv. 32.
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4. Closely bound together; undivided; united; constituting a whole.
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The church is therefore one, though the members may be many. Bp. Pearson
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5. Single in kind; the same; a common.
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One plague was on you all, and on your lords. 1 Sam. vi. 4.
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6. Single; unmarried. [Obs.]
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Men may counsel a woman to be one. Chaucer.
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&hand_; One is often used in forming compound words, the meaning of which is obvious; as, one-armed, one-celled, one-eyed, one-handed, one-hearted, one-horned, one-idead, one-leaved, one-masted, one-ribbed, one-story, one-syllable, one-stringed, one-winged, etc.
[1913 Webster]

All one, of the same or equal nature, or consequence; all the same; as, he says that it is all one what course you take. Shak. -- One day. (a) On a certain day, not definitely specified, referring to time past.
[1913 Webster] One day when Phoebe fair,
With all her band, was following the chase.
Spenser.
[1913 Webster] (b) Referring to future time: At some uncertain day or period in the future; some day.
[1913 Webster] Well, I will marry one day. Shak.

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One
One, n. 1. A single unit; as, one is the base of all numbers.
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2. A symbol representing a unit, as 1, or i.
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3. A single person or thing. “The shining ones.” Bunyan. “Hence, with your little ones.” Shak.
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He will hate the one, and love the other. Matt. vi. 24.
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That we may sit, one on thy right hand, and the other on thy left hand, in thy glory. Mark x. 37.
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After one, after one fashion; alike. [Obs.] Chaucer. -- At one, in agreement or concord. See At one, in the Vocab. -- Ever in one, continually; perpetually; always. [Obs.] Chaucer. -- In one, in union; in a single whole. -- One and one, One by one, singly; one at a time; one after another. “Raising one by one the suppliant crew.” Dryden. -- one on one contesting an opponent individually; -- in a contest. -- go one on one, to contest one opponent by oneself; -- in a game, esp. basketball.
[1913 Webster +PJC]

One
One (wŭn), indef. pron. Any person, indefinitely; a person or body; as, what one would have well done, one should do one's self.
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It was well worth one's while. Hawthorne.
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Against this sort of condemnation one must steel one's self as one best can. G. Eliot.
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One is often used with some, any, no, each, every, such, a, many a, another, the other, etc. It is sometimes joined with another, to denote a reciprocal relation.
[1913 Webster] When any one heareth the word. Matt. xiii. 19.
[1913 Webster] She knew every one who was any one in the land of Bohemia. Compton Reade.
[1913 Webster] The Peloponnesians and the Athenians fought against one another. Jowett (Thucyd. ).
[1913 Webster] The gentry received one another. Thackeray.

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One
One, v. t. To cause to become one; to gather into a single whole; to unite; to assimilite. [Obs.]
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The rich folk that embraced and oned all their heart to treasure of the world. Chaucer.
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Oneberry
One"ber`ry (?), n. (Bot.) The herb Paris. See Herb Paris, under Herb.
[1913 Webster]

one-dimensional
one-dimensional adj. having only one dimension; as, a line is a one-dimensional object; a one-dimensional array.
[WordNet 1.5 +PJC]

2. Seeming to have only one dimension; lacking depth; as, one-dimensional characters.
[PJC]

one-eared
one-eared adj. Relating to or having or hearing with only one ear; monaural. Opposite of binaural.
Syn. -- monaural.
[WordNet 1.5 +PJC]

one-edged
one-edged adj. Having only one sharp edge; single-edged; -- of cutting instruments, mostly swords and razor blades. Opposed to double-edged.
[PJC]

one-eyed
one-eyed adj. having or showing only one eye; as, one-eyed Jacks are wild; the three one-eyed Cyclopes of Greek myth.
[WordNet 1.5]

one-fifth
one-fifth n. A fifth part.
Syn. -- fifth, fifth part, twenty percent.
[WordNet 1.5]

one-fourth
one-fourth n. A quarter; a fourth part.
Syn. -- fourth, quarter, fourth part, twenty-five percent, quartern.
[WordNet 1.5]

one-half
one-half n. one of two equal parts of a divisible whole; a half; a century and one half.
Syn. -- half.
[WordNet 1.5]

one-handed
one-hand
one"-hand`, one`-hand"ed (?), a. Employing one hand; as, the one-hand alphabet. See Dactylology.
[1913 Webster]

one-hitter
one-hitter n. (Baseball) A game in which a pitcher allows the opposing team only one hit.
Syn. -- 1-hitter.
[WordNet 1.5]

one-horse
one"-horse` (?), a. 1. Drawn by one horse; having but a single horse; as, a one-horse carriage.
[1913 Webster]

2. Second-rate; inferior; small; as, a one-horse town. [Slang, U.S.]
[1913 Webster +PJC]

Oneidas
O*nei"das (?), prop. n. pl.; sing. Oneida (&unr_;). (Ethnol.) A tribe of Indians formerly inhabiting the region near Oneida Lake in the State of New York, and forming part of the Five Nations. Remnants of the tribe now live in New York, Canada, and Wisconsin.
[1913 Webster]

one-eighth
one-eighth n. an eightht part.
Syn. -- eighth.
[WordNet 1.5]

Oneirocritic
O*nei`ro*crit`ic (?), n. [Cf. F. oneirocritique. See Oneirocritic, a.] An interpreter of dreams. Bp. Warburton. Addison.
[1913 Webster]

Oneirocritical
Oneirocritic
{ O*nei`ro*crit`ic (?), O*nei`ro*crit`ic*al (?), } a. [Gr. &unr_;; &unr_; a dream + &unr_; critical, fr. &unr_; to discern.] Of or pertaining to the interpretation of dreams. Addison.
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Oneirocritics
Oneirocriticism
{ O*nei`ro*crit`i*cism (?), O*nei`ro*crit`ics (?), } n. The art of interpreting dreams.
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Oneiromancy
O*nei"ro*man`cy (?), n. [Gr. &unr_; a dream + -mancy.] Divination by means of dreams. De Quincey.
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Oneiroscopist
O`nei*ros"co*pist, n. One who interprets dreams.
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Oneiroscopy
O`nei*ros"co*py (?), n. [Gr. &unr_; a dream + -scopy.] The interpretation of dreams.
[1913 Webster]

Oneliness
One"li*ness (?), n. The state of being one or single. [Obs.] Cudworth.
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Onely
One"ly (?), a. See Only. [Obs.] Spenser.
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Onement
One"ment (?), n. The state of being at one or reconciled. [Obs.] Bp. Hall.
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Oneness
One"ness, n. The state of being one; singleness in number; individuality; unity.
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Our God is one, or rather very oneness. Hooker.
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Onerary
On"er*a*ry (?), a. [L. onerarius, fr. onus, oneris, load, burden: cf. F. onéraire.] Fitted for, or carrying, a burden. Johnson.
[1913 Webster]

Onerate
On"er*ate (?), v. t. [imp. & p. p. Onerated (?); p. pr. & vb. n. Onerating.] [L. oneratus, p. p. pf onerare.] To load; to burden. [Obs.] Becon.
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Oneration
On`er*a"tion (?), n. The act of loading. [Obs.]
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Onerous
On"er*ous (?), a. [L. onerosus, fr. onus, oneris, a load, burden: cf. F. onéreux.] Burdensome; oppressive. “Too onerous a solicitude.” I. Taylor.
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Onerous cause (Scots Law), a good and legal consideration; -- opposed to gratuitous.
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Onerously
On"er*ous*ly, adv. In an onerous manner.
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Ones
Ones (ōns), adv. Once. [Obs.] Chaucer.
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Oneself
One`self" (wŭn`s&ebreve_;lf"), pron. A reflexive form of the indefinite pronoun one. Commonly written as two words, one's self.
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One's self (or more properly oneself), is quite a modern form. In Elizabethan English we find a man's self = one's self. Morris.
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one-seventh
one-seventh n. a seventh part.
Syn. -- seventh.
[WordNet 1.5]

One-sided
One`-sid"ed (?), a. 1. Having one side only, or one side prominent.
[1913 Webster]

2. Hence: Limited to one side; favoring one person or side over another; partial; unjust; unfair; as, a one-sided view or statement. [wns=5] “Unguarded and one-sided language.” T. Arnold.
Syn. -- biased, colored, slanted.
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3. Having one team or party greatly superior; strongly favoring only one side; uneven; imbalanced; unequal; as, a one-sided contest; -- of contests, generally. [wns=4]
[PJC]

4. (Bot.) Growing on one side of a stem; as, one-sided flowers.
[1913 Webster]

5. Using only one side, or having only one side usable; as, one-sided printing; one-sided film; -- used mostly of sheets of material used for printing or imaging.
[PJC]

6. Performed by only one party or side; -- of actions directly affecting more than one party. Opposite of multilateral. [wns=2]
Syn. -- unilateral (vs. bilateral).
[WordNet 1.5 +PJC]

7. out of proportion in shape.
Syn. -- ill-proportioned, lopsided.
[WordNet 1.5]

8. Not reversible or capable of having either side out; -- of cloth fabrics or clothing. Opposite of reversible. [wns=1]
Syn. -- nonreversible.
[WordNet 1.5]

-- One`-sid"ed*ly, adv. -- One`-sid"ed*ness, n.
[1913 Webster]

one-sixth
one-sixth n. a sixth part.
Syn. -- sixth.
[WordNet 1.5]

one-step
one-step n. an early ballroom dance, precursor to the foxtrot.
[WordNet 1.5]

one-tenth
one-tenth n. a tenth part.
Syn. -- tenth, tenth part, ten percent.
[WordNet 1.5]

Onethe
On*ethe" (?), adv. Scarcely. See Unnethe. [Obs.] Chaucer.
[1913 Webster]

one-third
one-third n. one of three equal parts of a divisible whole.
Syn. -- third, tierce.
[WordNet 1.5]

one-up
one-up a. Ahead of a friend or competitor in some competitive activity.
[PJC]

one-upmanship
one-upmanship n. The attitude or practice of trying to keep one step ahead of a friend or competitor; vigorous competitiveness.
[WordNet 1.5 +PJC]

one-way
one-way adj. 1. Legally permitting movement or travel in one direction only; -- of paths, especially roads; as, one-way streets.
[WordNet 1.5]

2. (Transportation) Pertaining to or valid for transportation in one direction between two points; as, a one-way ticket; a one-way fare. Opposed to round-trip.
[PJC]

one-woman
one-woman adj. Designed for or restricted to a single person; same as one-man, but used when the person in question is female, or to avoid sexist language; as, a one-woman submarine; a one-woman show.
Syn. -- one-man, one-person.
[WordNet 1.5 +PJC]

one-year
one-year adj. 1. completing its life cycle within a year. [prenominal]
[WordNet 1.5]

Ongoing
On"go`ing (?), n. The act of going forward; progress; (pl.) affairs; business; current events.
[1913 Webster]

The common ongoings of this our commonplace world, and everyday life. Prof. Wilson.
[1913 Webster]

ongoing
on"go`ing (?), a. Occurring at present; progressing; in progress; continuing; not past, completed, or future; as, an ongoing petition drive; an ongoing effort.
[PJC]

Onguent
On"guent (?), n. [F.] An unguent.
[1913 Webster]

On-hanger
On"-hang`er (?), n. A hanger-on.
[1913 Webster]

Onion
On"ion (?), n. [F. ognon, fr. L. unio oneness, unity, a single large pearl, an onion. See One, Union.] 1. (Bot.) A liliaceous plant of the genus Allium (Allium cepa), having a strong-flavored bulb and long hollow leaves; also, its bulbous root, much used as an article of food. The name is often extended to other species of the genus.
[1913 Webster]

2. The flavor of an onion{1}.
[PJC]

Onion fish (Zool.), the grenadier. -- Onion fly (Zool.) a dipterous insect whose larva feeds upon the onion; especially, Anthomyia ceparum and Ortalis flexa. -- Welsh onion. (Bot.) See Cibol. -- Wild onion (Bot.), a name given to several species of the genus Allium.
[1913 Webster]

onion dome
on`ion dome" (?), n. (Architecture) A dome with a pointed top, its width often extending beyond the width of the tower it covers; -- a style of architecture characteristic of Russian Orthodox churches.
[PJC]

onionskin
on"ion*skin` (?), n. [Onion + skin.] A kind of thin but strong translucent paper with a glossy finish.
[Webster 1913 Suppl.]

Onirocritic
O*ni`ro*crit`ic (?), a. See Oneirocritic.
[1913 Webster]

Oniscus
Oniscus prop. n. The type genus of the Oniscidae, consisting of woodlice that cannot roll into a ball.
Syn. -- genus Oniscus.
[WordNet 1.5]

on-key
on-key adj. (Music) In tune; striking or singing the proper notes. Opposite of off-key.
Syn. -- true.
[WordNet 1.5]

on-license
on-license n. a license to sell liquor for consumption on the premises.
[WordNet 1.5]

on-line
online
on"line`, on"-line` adj. 1. 1 (Computers) connected by a communications line to a computer. Opposite of off-line.
Syn. -- online, on line(predicate).
[WordNet 1.5]

2. [prenominal] being in progress now; ongoing; as, on-line editorial projects. [Colloq.]
Syn. -- in progress(predicate), ongoing, on line(predicate).
[WordNet 1.5]

Onliness
On"li*ness (?), n. The state of being alone. [Obs.]
[1913 Webster]

Onloft
On*loft" (?), adv. Aloft; above ground. [Obs.]
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She kept her father's life onloft. Chaucer.
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On-looker
On"-look`er (?), n. A person who observes an event; a looker-on; a spectator.
[1913 Webster]

On-looking
On"-look`ing, a. Looking on or forward.
[1913 Webster]

Only
On"ly (?), a. [OE. only, anly, onlich, AS. ānlic, i.e., onelike. See One, and Like, a.] 1. One alone; single; as, the only man present; his only occupation.
[1913 Webster]

2. Alone in its class; by itself; not associated with others of the same class or kind; as, an only child.
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3. Hence, (figuratively): Alone, by reason of superiority; preeminent; chief. “Motley's the only wear.” Shak.
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Only
On"ly (?), adv. [See Only, a.] 1. In one manner or degree; for one purpose alone; simply; merely; barely.
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And to be loved himself, needs only to be known. Dryden.
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2. So and no otherwise; no other than; exclusively; solely; wholly. “She being only wicked.” Beau. & Fl.
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Every imagination . . . of his heart was only evil. Gen. vi. 5.
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3. Singly; without more; as, only-begotten.
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4. Above all others; particularly. [Obs.]
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His most only elected mistress. Marston.
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Only
On"ly, conj. Save or except (that); -- an adversative used elliptically with or without that, and properly introducing a single fact or consideration.
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He might have seemed some secretary or clerk . . . only that his low, flat, unadorned cap . . . indicated that he belonged to the city. Sir W. Scott.
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Onocerin
On`o*ce"rin (?), n. [NL. Ononis, the generic name of the plant + L. cera wax.] (Chem.) A white crystalline waxy substance extracted from the root of the leguminous plant Ononis spinosa.
[1913 Webster]

Onoclea
Onoclea prop. n. A genus consisting of only species: the sensitive fern; in some classifications it is included in the Polypodiaceae.
Syn. -- genus Onoclea.
[WordNet 1.5]

onology
o*nol"o*gy (?), n. [Gr. &unr_; an ass + -logy.] Foolish discourse. [R.]
[1913 Webster]

onomancy
on"o*man`cy (?), n. [Gr. 'o`noma name + -mancy. Cf. Nomancy.] Divination by the letters of a name; nomancy. [R.] Camden.
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Onomantical
Onomantic
{ On`o*man"tic (?), On`o*man"tic*al (?), } a. Of or pertaining to onomancy. [R.]
[1913 Webster]

Onomastic
On`o*mas"tic (?), a. [Gr. &unr_;, from &unr_; to name, 'o`noma name.] (Law) Applied to a signature when the body of the instrument is in another's handwriting. Burrill.
[1913 Webster]

Onomasticon
On`o*mas"ti*con (?), n. [NL., fr. Gr. &unr_; (sc.&unr_;), fr. &unr_;. See Onomastic.] A collection of names and terms; a dictionary; specif., a collection of Greek names, with explanatory notes, made by Julius Pollux about a. d. 180.
[1913 Webster]

Onomatechny
On"o*ma*tech`ny (?), n. [Gr. 'o`noma + &unr_; art.] Prognostication by the letters of a name.
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Onomatologist
On`o*ma*tol"o*gist (?), n. One versed in the history of names. Southey.
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Onomatology
On`o*ma*tol"o*gy (?), n. [Gr. 'o`noma, 'ono`matos + -logy.] The science of names or of their classification.
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Onomatope
O*nom"a*tope (?), n. [See Onomatopoeia.] An imitative word; an onomatopoetic word.
[1913 Webster]

Onomatopoeia
On`o*mat`o*poe"ia (?), n. [L., fr. Gr. &unr_;; 'o`noma, 'ono`matos, a name + poiei^n to make.] (Philol.) The formation of words in imitation of sounds; a figure of speech in which the sound of a word is imitative of the sound of the thing which the word represents; as, the buzz of bees; the hiss of a goose; the crackle of fire.
[1913 Webster]

&hand_; It has been maintained by some philologist that all primary words, especially names, were formed by imitation of natural sounds, but this is not believed by most.
[1913 Webster +PJC]

Onomatopoeic
On`o*mat`o*poe"ic (?), a. Onomatopoetic. Whitney.
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Onomatopoetic
On`o*mat`o*po*et"ic (?), a. Of or pertaining to onomatopoeia; characterized by onomatopoeia; imitative; as, an onomatopoetic writer or word. Earle.
[1913 Webster]

Onomatopy
On`o*mat"o*py (?), n. Onomatopoeia.
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Onomomancy
O*nom"o*man`cy (?), n. See Onomancy.
[1913 Webster]

Onondagas
On`on*da"gas (?), n. pl.; sing. Onondaga (&unr_;). (Ethnol.) A tribe of Indians formerly inhabiting what is now a part of the State of New York. They were the central or head tribe of the Five Nations.
[1913 Webster]

Onrush
On"rush` (?), n. A rushing onward.
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Onset
On"set` (?), n. [On + set.] 1. A rushing or setting upon; an attack; an assault; a storming; especially, the assault of an army. Milton.
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The onset and retire
Of both your armies.
Shak.
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Who on that day the word of onset gave. Wordsworth.
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2. A setting about; a beginning; -- used especially of diseases or pathological symptoms. Shak.
[1913 Webster +PJC]

There is surely no greater wisdom than well to time the beginnings and onsets of things. Bacon.
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3. Anything set on, or added, as an ornament or as a useful appendage. [Obs.] Johnson.
[1913 Webster]

Onset
On"set`, v. t. 1. To assault; to set upon. [Obs.]
[1913 Webster]

2. To set about; to begin. [Obs.] Carew.
[1913 Webster]

onshore
onshore adj. coming from the sea toward the land; -- of winds and weather; as, an onshore gale. Opposed to offshore.
Syn. -- inshore, seaward.
[WordNet 1.5]

2. On the edge of the land; near the shoreline; as, an onshore lighthouse.
[WordNet 1.5]

onside
onside adj. (Sports) Not offside; being within the prescribed area of play. offside
[WordNet 1.5]

onside kick
onside kick (Football) A kickoff in which the kicking team attempts to kick the ball only so far as is legally required (beyond the 50-yard line), so as to have a better chance to recover the kicked ball itself; -- it is a risky type of play used only when the kicking team is losing and there is little time left to play.
[PJC]

on-site
on-site adj. Taking place or located at the indicated site; as, on-site inspection. Opposed to off-site.
[WordNet 1.5]

Onslaught
On"slaught` (?), n. [OE. on on + slaught, slaht, slaughter. See Slaughter.] 1. An attack; an onset; esp., a furious or murderous attack or assault.
[1913 Webster]

By storm and onslaught to proceed. Hudibras.
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2. A bloody fray or battle. [Scot.] Jamieson.
[1913 Webster]

Onstead
On"stead (?), n. [Possibly a corruption of homestead.] A single farmhouse; a steading. [Prov. Eng. & Scot.] Grose. Jamieson.
[1913 Webster]

on-street
on-street adj. at the sides of streets; as, on-street parking is prohibited at rush hour. Opposite of off-street.
[WordNet 1.5]

on the fritz
on` the fritz" (&obreve_;n` &thlig_;ŭ fr&ibreve_;ts"), pred. a. Malfunctioning or inoperable; -- of machinery and devices. [slang]
[PJC]

on the rag
on` the rag" (?), pred. a. Menstruating; -- of women. [vulgar slang]
[PJC]

on-the-spot
on-the-scene
on-the-scene on-the-spot adj. Being or occurring at the place or time in question; as, an on-the-scene newscast.
[WordNet 1.5]

Onto
On"to (?), prep. [On + to. Cf. Into.] On the top of; upon; on. See On to, under On, prep.
[1913 Webster]

Ontogeny
Ontogenesis
{ On`to*gen"e*sis (?), On*tog"e*ny (?), } n. [See Ontology, and Genesis.] (Biol.) The history of the individual development of an organism; the sequence of events involved in the development of an organism; the history of the evolution of the germ; the development of an individual organism, -- in distinction from phylogeny, or evolution of the tribe. Called also henogenesis, henogeny.
Syn. -- growth, growing, maturation, development.
[1913 Webster]

Ontogenetic
On`to*ge*net"ic (?), a. (Biol.) Of or pertaining to ontogenesis; as, ontogenetic phenomena. -- On`to*ge*net"ic*al*ly (#), adv.
[1913 Webster]

Ontogenic
On`to*gen"ic (?), a. (Biol.) Ontogenetic.
[1913 Webster]

Ontologic
On`to*log"ic (?), a. Ontological.
[1913 Webster]

Ontological
On`to*log"ic*al (?), a. [Cf. F. ontologique.] Of or pertaining to ontology.
[1913 Webster]

Ontologically
On`*to*log"ic*al*ly, adv. In an ontological manner.
[1913 Webster]

Ontologist
On*tol"o*gist (?), n. [Cf. F. ontologiste.] One who is versed in or treats of ontology. Edin. Rev.
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Ontology
On*tol"o*gy (?), n. [Gr. &unr_; the things which exist (pl.neut. of &unr_;, &unr_;, being, p. pr. of &unr_; to be) + -logy: cf. F. ontologie.] 1. That department of the science of metaphysics which investigates and explains the nature and essential properties and relations of all beings, as such, or the principles and causes of being.
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2. (Computers) A systematic arrangement of all of the important categories of objects or concepts which exist in some field of discourse, showing the relations between them. When complete, an ontology is a categorization of all of the concepts in some field of knowledge, including the objects and all of the properties, relations, and functions needed to define the objects and specify their actions. A simplified ontology may contain only a hierarchical classification (a taxonomy) showing the type subsumption relations between concepts in the field of discourse. An ontology may be visualized as an abstract graph with nodes and labeled arcs representing the objects and relations. The concepts included in an ontology and the hierarchical ordering will be to a certain extent arbitrary, depending upon the purpose for which the ontology is created. This arises from the fact that objects are of varying importance for different purposes, and different properties of objects may be chosen as the criteria by which objects are classified. In addition, different degrees of aggregation of concepts may be used, and distinctions of importance for one purpose may be of no concern for a different purpose.
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Onus
O"nus (?), n. [L.] A burden; an obligation.
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Onus probandi (&unr_;) [L.], the obligation to furnish evidence to prove an assertion; the burden of proof.
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Onward
On"ward (?), a. 1. Moving in a forward direction; tending toward a contemplated or desirable end; forward; as, an onward course, progress, etc.
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2. Advanced in a forward direction or toward an end.
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Within a while, Philoxenus came to see how onward the fruits were of his friend's labor. Sir P. Sidney.
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Onward
On"ward, adv. Toward a point before or in front; forward; progressively; as, to move onward.
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Not one looks backward, onward still he goes. Pope.
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Onwardness
On"ward*ness, n. Progress; advancement.
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Onwards
On"wards (?), adv. [See -wards.] Onward.
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Ony
On"y (?), a. Any. [Obs.] Chaucer.
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Onycha
On"y*cha (?), n. [NL., from L. onyx, -ychis, onyx, also, a kind of mussel, Gr. &unr_;, &unr_;. See Onyx.]
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1. An ingredient of the Mosaic incense, probably the operculum of some kind of strombus. Ex. xxx. 34.
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2. The precious stone called onyx. [R.]
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Onychia
O*nych"i*a (?), n. [NL. See Onyx.] (Med.) (a) A whitlow. (b) An affection of a finger or toe, attended with ulceration at the base of the nail, and terminating in the destruction of the nail.
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Onychomancy
On"y*cho*man`cy (?), n. [Gr. &unr_;, &unr_;, a finger nail + -mancy: cf. F. onychomancie.] Divination by the nails.
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Onychophora
On`y*choph"o*ra (?), n. pl. [NL., from Gr. &unr_;, &unr_;, a claw + &unr_;.] (Zool.) Malacopoda.
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onychophoran
onychophoran n. Any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms; a member of the Onychophora, also called Malacopoda. See Malacopoda.
Syn. -- velvet worm, peripatus.
[WordNet 1.5 +PJC]

onymous
onymous adj. bearing a name; as, articles in magazines are usually onymous. Opposite of anonymous.
Syn. -- signed.
[WordNet 1.5 +PJC]

Onyx
O"nyx (?), n. [L., fr. Gr. &unr_; a claw, finger nail, a veined gem. See Nail, and cf. Onycha.] 1. (Min.) Chalcedony in parallel layers of different shades of color. It is used for making cameos, the figure being cut in one layer with the next as a ground.
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2. Same as Mexican onyx.
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3. A deep jet-black color.
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Onyx marble, Mexican onyx, a banded variety of marble or calcium carbonate resembling onyx. It is obtained from Mexico in various colors ranging from white to deep black.
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onyx
o"nyx (?), a. Deep, jet-black.
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Oo
Oo, a. One. [Obs.] Chaucer.
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oo
o"o (?), n. [Hawaiian.] (Zool.) Any of several beautiful birds of the genus Moho, including the extinct Moho nobilis. They are honey-eaters native to the Hawaiian Islands. It yields the brilliant yellow feathers formerly used in making the royal robes. Called also yellow-tufted honeysucker.
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Ooecium
O*oe"ci*um (?), n.; pl. Ooecia (#). [NL., fr. Gr. w,'o`n an egg + &unr_; a house.] (Zool.) One of the special zooids, or cells, of Bryozoa, destined to receive and develop ova; an ovicell. See Bryozoa.
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Oogenesis
O`o*gen"e*sis (?), n. [Gr. w,'o`n an egg + E. genesis.] (Physiol.) The development, or mode of origin, of the ova.
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Oogonium
O`o*go"ni*um (?), n.; pl. L. Oogonia (#), E. Oogoniums (#). [NL., fr. Gr. w,'o`n an egg + &unr_; offspring.] (Bot.) A special cell in certain cryptogamous plants containing oospheres, as in the rockweeds (Fucus), and the orders Vaucherieae and Peronosporeae.
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Ooidal
O*oi"dal (?), a. [Gr. &unr_;; w,'o`n an egg + e'i^dos form.] (Biol.) Shaped like an egg.
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Ook
Ook (ōk), n. Oak. [Obs.] “A branched ook.” Chaucer.
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Oolite
O"o*lite (?), n. [Gr. w,'o`n an egg + -lite: cf. F. ooithe. So named from its resemblance to the roe of fish.] (Geol.) A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology.
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Oolitic
O`o*lit"ic (?), a. [Cf. F. oolithique.] Of or pertaining to oolite; composed of, or resembling, oolite.
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Oological
O`o*log"ic*al (?), a. (Zool.) Of or pertaining to oology.
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Oologist
O*ol"o*gist (?), n. One versed in oology.
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Oology
O*ol"o*gy (?), n. [Gr. w,'o`n an egg + -logy.] The science of eggs in relation to their coloring, size, shape, and number.
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Oolong
Oo"long (?), n. [Chinese, green dragon.] A fragrant variety of black tea having somewhat the flavor of green tea. [Written also oulong.]
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Oomiak
Oomiac
{ Oo"mi*ac, Oo"mi*ak} (?), n. A long, broad boat used by the Eskimos.
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Oon
Oon (ōn), a. One. [Obs.] Chaucer.
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Oones
Oones (ōns), adv. Once. [Obs.] Chaucer.
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Oop
Oop (&oomacr_;p), v. t. [Etymol. uncertain.] To bind with a thread or cord; to join; to unite. [Scot.] Jamieson.
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Oopak
Oopack
{ Oo"pack, Oo"pak} (?), n. [So named from a district in China.] A kind of black tea.
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Oophore
O"o*phore (?), n. [Gr. &unr_; egg-bearing; w,'o`n an egg + fe`rein to bear.] (Bot.) An alternately produced form of certain cryptogamous plants, as ferns, mosses, and the like, which bears antheridia and archegonia, and so has sexual fructification, as contrasted with the sporophore, which is nonsexual, but produces spores in countless number. In ferns the oophore is a minute prothallus; in mosses it is the leafy plant.
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Oophorectomy
O`o*pho*rec"to*my (?), n. [Gr. w,'o`n egg + fe`rein to bear + &unr_; a cutting out.] (Surg.) Ovariotomy.
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Oophoric
O`o*phor"ic (?), a. (Bot.) Having the nature of, or belonging to, an oophore.
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Oophoridium
O`o*pho*rid"i*um (?), n.; pl. L. Oophorida (#), E. Oophoridiums (#). [NL., dim. fr. Gr. &unr_;. See Oophore.] (Bot.) The macrosporangium or case for the larger kind of spores in heterosporous flowerless plants.
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Oophoritis
O`o*pho*ri"tis (?), n. [NL., fr. Gr. w,'o`n egg + fe`rein to bear + -itis.] (Med.) Ovaritis.
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Oophyte
O"o*phyte (?), n. [Gr. w,'o`n an egg + fyto`n a plant.] (Bot.) Any plant of a proposed class or grand division (collectively termed oophytes or Oophyta), which have their sexual reproduction accomplished by motile antherozoids acting on oospheres, either while included in their oogonia or after exclusion.
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&hand_; This class was at first called Oosporeae, and is made to include all algae and fungi which have this kind of reproduction, however they may differ in all other respects, the contrasted classes of Thallophytes being Protophytes, Zygophytes, and Carpophytes. The whole system has its earnest advocates, but is rejected by many botanists. See Carpophyte.
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Oophytic
O`o*phyt"ic (ō`&ouptack_;*f&ibreve_;t"&ibreve_;k), a. (Bot.) Of or pertaining to an oophyte.
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Oorial
O*o"ri*al (?), n. (Zool.) A wild, bearded sheep inhabiting the Ladakh mountains. It is reddish brown, with a dark beard from the chin to the chest.
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Oosperm
O"o*sperm (ō"&ouptack_;*sp&etilde_;rm), n. [Gr. w,'o`n an egg + E. sperm.] (Biol.) The ovum, after fusion with the spermatozoon in impregnation. Balfour.
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Oosphere
O"o*sphere (ō"&ouptack_;*sfēr), n. [Gr. w,'o`n an egg + E. sphere.]
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1. (Bot.) An unfertilized, rounded mass of protoplasm, produced in an oogonium.
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&hand_; After being fertilized by the access of antherozoids it becomes covered with a cell wall and develops into an oospore, which may grow into a new plant like the parent.
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2. (Bot.) An analogous mass of protoplasm in the ovule of a flowering plant; an embryonic vesicle. Goodale.
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Oosporangium
O`o*spo*ran"gi*um (?), n.; pl. L. Oosporangia (#), E. Oosporangiums (#). [NL., fr. Gr. w,'o`n an egg + &unr_; vessel.] (Bot.) An oogonium; also, a case containing oval or rounded spores of some other kind than oospores.
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Oospore
O"o*spore (?), n. [Gr. w,'o`n an egg + &unr_; a seed.] (Bot.) (a) A special kind of spore resulting from the fertilization of an oosphere by antherozoids. (b) A fertilized oosphere in the ovule of a flowering plant.
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Oosporic
O`o*spor"ic (?), a. (Bot.) Of or pertaining to an oospore.
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Oostegite
O*os"te*gite (?), n. [Gr. &unr_; + &unr_; a roof.] (Zool.) One of the plates which in some Crustacea inclose a cavity wherein the eggs are hatched.
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Ootheca
O`o*the"ca (?), n.; pl. Oothecae (#). [NL., fr. Gr. w,'o`n an egg + &unr_; a case.] (Zool.) An egg case, especially those of many kinds of mollusks, and of some insects, as the cockroach. Cf. Ooecium.
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Ootocoid
Ooticoid
{ O*ot"i*coid (?), O*ot"o*coid (?), } n. [Gr. &unr_; laying eggs (&unr_; egg + &unr_; a bearing, ti`ktein to bear) + -oid.] (Zool.) A half oviparous, or an oviparous, mammal; a marsupial or monotreme.
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Ootype
O"o*type (?), n. [Gr. &unr_; + -type.] (Zool.) The part of the oviduct of certain trematode worms in which the ova are completed and furnished with a shell.
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Ooze
Ooze (?), n. [OE. wose, AS. wase dirt, mire, mud, akin to w&unr_;s juice, ooze, Icel. vās wetness, OHG. waso turf, sod, G. wasen.] 1. Soft mud or slime; earth so wet as to flow gently, or easily yield to pressure. “My son i' the ooze is bedded.” Shak.
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2. Soft flow; spring. Prior.
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3. The liquor of a tan vat.
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4. (Oceanography) A soft deposit covering large areas of the ocean bottom, composed largely or mainly of the shells or other hard parts of minute organisms, as Foraminifera, Radiolaria, and diatoms. The radiolarian ooze occurring in many places in very deep water is composed mainly of the siliceous skeletons of radiolarians, calcareous matter being dissolved by the lage percentage of carbon dioxide in the water at these depths.
[Webster 1913 Suppl.]

Ooze
Ooze, v. i. [imp. & p. p. Oozed (?); p. pr. & vb. n. Oozing.] [Prov. Eng. weeze, wooz. See Ooze, n.] 1. To flow gently; to percolate, as a liquid through the pores of a substance or through small openings.
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The latent rill, scare oozing through the grass. Thomson.
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2. Fig.: To leak (out) or escape slowly; as, the secret oozed out; his courage oozed out.
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Ooze
Ooze, v. t. To cause to ooze. Alex. Smith.
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Ooze leather
Ooze leather. Leather made from sheep and calf skins by mechanically forcing ooze through them; esp., such leather with a soft, finely granulated finish (called sometimes velvet finish) put on the flesh side for special purposes. Ordinary ooze leather is used for shoe uppers, in bookbinding, etc. Hence Ooze calf, Ooze finish, etc.
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Oozoa
O`ö*zo"a (?), n. pl. [NL., fr. Gr. w,'o`n an egg + zw^,on an animal.] (Zool.) Same as Acrita.
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oozing
oozing adj. leaking out slowly.
Syn. -- oozy, seeping.
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Oozy
Ooz"y (?), a. Miry; containing soft mud; resembling ooze; as, the oozy bed of a river. Pope.
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Opacate
O*pa"cate (?), v. t. [L. opacatus, p. p. of opacare.] To darken; to cloud. [Obs.] Boyle.
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Opacity
O*pac"i*ty (?), n. [L. opacitas: cf. F. opacité.] 1. The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness.
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2. Obscurity; want of clearness. Bp. Hall.
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Opacous
O*pa"cous (?), a. [L. opacus. See Opaque.] Opaque. [R.] Milton. -- O*pa"cous*ness, n. [R.]
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Opacular
O*pac"u*lar (?), a. Opaque. [Obs.] Sterne.
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Opah
O"pah (?), n. (Zool.) A large oceanic fish (Lampris guttatus), inhabiting the Atlantic Ocean. It is remarkable for its brilliant colors, which are red, green, and blue, with tints of purple and gold, covered with round silvery spots. Called also king of the herrings.
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Opake
O*pake" (?), a. See Opaque.
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Opal
O"pal (?), n. [L. opalus: cf. Gr. &unr_;, Skr. upala a rock, stone, precious stone: cf. F. opale.] (Min.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.
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&hand_; The precious opal presents a peculiar play of colors of delicate tints, and is highly esteemed as a gem. One kind, with a varied play of color in a reddish ground, is called the harlequin opal. The fire opal has colors like the red and yellow of flame. Common opal has a milky appearance. Menilite is a brown impure variety, occurring in concretions at Menilmontant, near Paris. Other varieties are cacholong, girasol, hyalite, and geyserite.
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Opalesce
O`pal*esce" (?), v. i. [imp. & p. p. Opalesced (?); p. pr. & vb. n. Opalescing (?).] To give forth a play of colors, like the opal.
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Opalescence
O`pal*es"cence (?), n. (Min.) A reflection of a milky or pearly light from the interior of a mineral, as in the moonstone; the state or quality of being opalescent.
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Opalescent
O`pal*es"cent (?), a. Reflecting a milky or pearly light from the interior; having an opaline play of colors.
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Opaline
O"pal*ine (?), a. [Cf. F. opalin.] Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal.
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Opaline
O"pal*ine (?), n. 1. An opaline variety of yellow chalcedony.
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2. Opal glass.
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3. An opaline color or expanse.
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Opalize
O"pal*ize (?), v. t. [imp. & p. p. Opalized (?); p. pr. & vb. n. Opalizing.] [Cf. F. opaliser.] To convert into opal, or a substance like opal. Lyell.
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Opalotype
O*pal"o*type (?), n. [Opal + -type.] (Photog.) A picture taken on “milky” glass.
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Opaque
O*paque" (?), a. [F., fr. L. opacus. Cf. Opacous.]
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1. Impervious to the rays of light; not transparent; as, an opaque substance.
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2. Obscure; not clear; unintelligible. [Colloq.]
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Opaque
O*paque", n. That which is opaque; opacity. Young.
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Opaqueness
O*paque"ness, n. The state or quality of being impervious to light; opacity. Dr. H. More.
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Ope
Ope (?), a. Open. [Poetic] Spenser.
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On Sunday heaven's gate stands ope. Herbert.
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Ope
Ope, v. t. & i. To open. [Poetic]
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Wilt thou not ope thy heart to know
What rainbows teach and sunsets show?
Emerson.
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Opeidoscope
O*pei"do*scope (?), n. [Gr. &unr_;, &unr_;, voice + e'i^dos form + -scope.] (Physics) An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tube, as by speaking or singing into it. A. E. Dolbear.
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Opelet
Ope"let (?), n. (Zool.) A bright-colored European actinian (Anemonia sulcata, syn. Anthea sulcata); -- so called because it does not retract its tentacles.
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Open
O"pen (?), a. [AS. open; akin to D. open, OS. opan, G. offan, Icel. opinn, Sw. öppen, Dan. aaben, and perh. to E. up. Cf. Up, and Ope.] 1. Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up or covered over; -- applied to passageways; as, an open door, window, road, etc.; also, to inclosed structures or objects; as, open houses, boxes, baskets, bottles, etc.; also, to means of communication or approach by water or land; as, an open harbor or roadstead.
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Through the gate,
Wide open and unguarded, Satan passed.
Milton
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Also, figuratively, used of the ways of communication of the mind, as by the senses; ready to hear, see, etc.; as, to keep one's eyes and ears open.
[1913 Webster] His ears are open unto their cry. Ps. xxxiv. 15.

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2. Free to be used, enjoyed, visited, or the like; not private; public; unrestricted in use; as, an open library, museum, court, or other assembly; liable to the approach, trespass, or attack of any one; unprotected; exposed.
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If Demetrius . . . have a matter against any man, the law is open and there are deputies. Acts xix. 33.
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The service that I truly did his life,
Hath left me open to all injuries.
Shak.
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3. Free or cleared of obstruction to progress or to view; accessible; as, an open tract; the open sea.
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4. Not drawn together, closed, or contracted; extended; expanded; as, an open hand; open arms; an open flower; an open prospect.
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Each, with open arms, embraced her chosen knight. Dryden.
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5. Hence: (a) Without reserve or false pretense; sincere; characterized by sincerity; unfeigned; frank; also, generous; liberal; bounteous; -- applied to personal appearance, or character, and to the expression of thought and feeling, etc.
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With aspect open, shall erect his head. Pope.
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The Moor is of a free and open nature. Shak.
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The French are always open, familiar, and talkative. Addison.
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(b) Not concealed or secret; not hidden or disguised; exposed to view or to knowledge; revealed; apparent; as, open schemes or plans; open shame or guilt; open source code.
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His thefts are too open. Shak.
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That I may find him, and with secret gaze
Or open admiration him behold.
Milton.
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6. Not of a quality to prevent communication, as by closing water ways, blocking roads, etc.; hence, not frosty or inclement; mild; -- used of the weather or the climate; as, an open season; an open winter. Bacon.
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7. Not settled or adjusted; not decided or determined; not closed or withdrawn from consideration; as, an open account; an open question; to keep an offer or opportunity open.
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8. Free; disengaged; unappropriated; as, to keep a day open for any purpose; to be open for an engagement.
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9. (Phon.) (a) Uttered with a relatively wide opening of the articulating organs; -- said of vowels; as, the än fär is open as compared with the ā in sāy. (b) Uttered, as a consonant, with the oral passage simply narrowed without closure, as in uttering s.
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10. (Mus.) (a) Not closed or stopped with the finger; -- said of the string of an instrument, as of a violin, when it is allowed to vibrate throughout its whole length. (b) Produced by an open string; as, an open tone.
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The open air, the air out of doors. -- Open chain. (Chem.) See Closed chain, under Chain. -- Open circuit (Elec.), a conducting circuit which is incomplete, or interrupted at some point; -- opposed to an uninterrupted, or closed circuit. -- Open communion, communion in the Lord's supper not restricted to persons who have been baptized by immersion. Cf. Close communion, under Close, a. -- Open diapason (Mus.), a certain stop in an organ, in which the pipes or tubes are formed like the mouthpiece of a flageolet at the end where the wind enters, and are open at the other end. -- Open flank (Fort.), the part of the flank covered by the orillon. -- Open-front furnace (Metal.), a blast furnace having a forehearth. -- Open harmony (Mus.), harmony the tones of which are widely dispersed, or separated by wide intervals. -- Open hawse (Naut.), a hawse in which the cables are parallel or slightly divergent. Cf. Foul hawse, under Hawse. -- Open hearth (Metal.), the shallow hearth of a reverberatory furnace. -- Open-hearth furnace, a reverberatory furnace; esp., a kind of reverberatory furnace in which the fuel is gas, used in manufacturing steel. -- Open-hearth process (Steel Manuf.), a process by which melted cast iron is converted into steel by the addition of wrought iron, or iron ore and manganese, and by exposure to heat in an open-hearth furnace; -- also called the Siemens-Martin process, from the inventors. -- Open-hearth steel, steel made by an open-hearth process; -- also called Siemens-Martin steel. -- Open newel. (Arch.) See Hollow newel, under Hollow. -- Open pipe (Mus.), a pipe open at the top. It has a pitch about an octave higher than a closed pipe of the same length. -- Open-timber roof (Arch.), a roof of which the constructional parts, together with the under side of the covering, or its lining, are treated ornamentally, and left to form the ceiling of an apartment below, as in a church, a public hall, and the like. -- Open vowel or Open consonant. See Open, a., 9.
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&hand_; Open is used in many compounds, most of which are self-explaining; as, open-breasted, open-minded.
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Syn. -- Unclosed; uncovered; unprotected; exposed; plain; apparent; obvious; evident; public; unreserved; frank; sincere; undissembling; artless. See Candid, and Ingenuous.
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Open
O"pen (?), n. Open or unobstructed space; clear land, without trees or obstructions; open ocean; open water. “To sail into the open.” Jowett (Thucyd.).
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Then we got into the open. W. Black.
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In open, In th open, in full view; without concealment; openly. [Obs.] Beau. & Fl.
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Open
O"pen v. t. [imp. & p. p. Opened (?); p. pr. & vb. n. Opening.] [AS. openian. See Open,a.] 1. To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter.
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And all the windows of my heart
I open to the day.
Whittier.
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2. To spread; to expand; as, to open the hand.
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3. To disclose; to reveal; to interpret; to explain.
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The king opened himself to some of his council, that he was sorry for the earl's death. Bacon.
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Unto thee have I opened my cause. Jer. xx. 12.
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While he opened to us the Scriptures. Luke xxiv. 32.
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4. To make known; to discover; also, to render available or accessible for settlements, trade, etc.
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The English did adventure far for to open the North parts of America. Abp. Abbot.
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5. To enter upon; to begin; as, to open a discussion; to open fire upon an enemy; to open trade, or correspondence; to open an investigation; to open a case in court, or a meeting.
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6. To loosen or make less compact; as, to open matted cotton by separating the fibers.
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To open one's mouth, to speak. -- To open up, to lay open; to discover; to disclose.
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Poetry that had opened up so many delightful views into the character and condition of our “bold peasantry, their country's pride.” Prof. Wilson.
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Open
O"pen, v. i. 1. To unclose; to form a hole, breach, or gap; to be unclosed; to be parted.
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The earth opened and swallowed up Dathan, and covered the company of Abiram. Ps. cvi. 17.
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2. To expand; to spread out; to be disclosed; as, the harbor opened to our view.
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3. To begin; to commence; as, the stock opened at par; the battery opened upon the enemy.
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4. (Sporting) To bark on scent or view of the game.
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Open-air
O"pen-air` (?), a. Taking place in the open air; outdoor; as, an open-air game or meeting.
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Openbill
O"pen*bill` (?), n. (Zool.) A bird of the genus Anastomus, allied to the stork; -- so called because the two parts of the bill touch only at the base and tip. One species inhabits India, another Africa. Called also open-beak. See Illust. (m), under Beak.
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opencast
opencast adj. same as opencut.
Syn. -- opencut, strip(prenominal).
[WordNet 1.5]

open-chain
open-chain adj. (Chemistry) not cyclic; having no rings of atoms within the molecular structure; having an open chain structure. Opposite of cyclic. [Narrower terms: aliphatic ]
Syn. -- acyclic.
[WordNet 1.5]

open-collared
open-collared adj. not buttoned at the neck; -- of a shirt; as, dressed casually in shorts and an open-collared shirt.
[WordNet 1.5]

opencut
opencut adj. worked from the exposed surface; -- of mines and mining; as, opencut mining.
Syn. -- opencast, strip(prenominal), open-pit.
[WordNet 1.5]

opened
opened adj. 1. having the covering skin pulled back; -- used of mouth or eyes; as, his mouth slightly opened. Opposite of closed. [Narrower terms: agape(predicate), gaping, yawning ; agaze, staring ; round-eyed, wide ]
Syn. -- open.
[WordNet 1.5]

2. having the seal broken so as to reveal the contents; as, the letter was already opened.
Syn. -- open.
[WordNet 1.5]

Open door
O"pen door. (a) Open or free admission to all; hospitable welcome; free opportunity.
[Webster 1913 Suppl.]

She of the open soul and open door,
With room about her hearth for all mankind.
Lowell.
[Webster 1913 Suppl.]

(b) In modern diplomacy, opportunity for political and commercial intercourse open to all upon equal terms, esp. with reference to a nation whose policy is wholly or partially fixed by nations foreign to itself, or to territory newly acquired by a conquering nation. In this sense, often used adjectively, as, open-door system, open-door policy, etc.
[Webster 1913 Suppl.]

The steps taken by Britain to maintain the open door have so far proved to be perfectly futile. A. R. Colquhoun.
[Webster 1913 Suppl.]

open-ended
open-ended adj. 1. allowing for a spontaneous response; as, an open-ended question. Contrasted to multiple-choice.
[WordNet 1.5]

2. without fixed limits or restrictions, as to tpoic or time; as, an open-ended discussion.
[WordNet 1.5]

3. allowing for future changes or revisions; as, open-ended agreements.
[WordNet 1.5]

Opener
O"pen*er (?), n. 1. One who, or that which, opens. “True opener of my eyes.” Milton.
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2. Specifically: A bottle opener or a can opener; as, you need an opener to get the cap off.
[PJC]

Open-eyed
O"pen-eyed` (?), a. With eyes widely open; alert to possible danger; watchful; vigilant. Shak.
Syn. -- argus-eyed, hawk-eyed, unsleeping, vigilant, wary, watchful.
[1913 Webster + WordNet 1.5]

Open-handed
O"pen-hand`ed (?), a. Generous; liberal; munificent. -- O"pen-hand`ed*ness, n. J. S. Mill.
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Open-headed
O"pen-head`ed (?), a. Bareheaded. [Obs.]
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Open-hearted
O"pen-heart`ed (?), a. Candid; frank; generous. Dryden. -- O"pen-heart`ed*ly, adv. -- O"pen-heart`ed*ness, n. Walton.
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Open-hearth steel
Open-hearth steel. See under Open.
[Webster 1913 Suppl.]

Opening
O"pen*ing, n. 1. The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech.
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The opening of your glory was like that of light. Dryden.
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2. A place which is open; a breach; an aperture; a gap; cleft, or hole.
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We saw him at the opening of his tent. Shak.
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3. Hence: An opportunity; as, an opening for business. [Colloq.] Dickens.
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4. Hence: A vacant place; a job which does not have a current occupant; as, they are now interviewing candidates for the two openings in the department.
[PJC]

5. A thinly wooded space, without undergrowth, in the midst of a forest; a clearing; as, oak openings. [U.S.] Cooper.
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Openly
O"pen*ly, adv. [AS. openlice.] 1. In an open manner; publicly; not in private; without secrecy.
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How grossly and openly do many of us contradict the precepts of the gospel by our ungodliness! Tillotson.
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2. Without reserve or disguise; plainly; evidently.
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My love . . . shall show itself more openly. Shak.
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open-minded
open-minded adj. Ready to entertain new ideas. Contrasted with closed-minded. [Narrower terms: broad-minded (vs. narrow-minded), broadminded, broad ]
Syn. -- open.
[WordNet 1.5]

Open-mouthed
O"pen-mouthed` (?), a. Having the mouth open; gaping; hence, greedy; clamorous. L'Estrange.
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Openness
O"pen*ness, n. The quality or state of being open.
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Open sea
Open sea. (Internat. Law) A sea open to all nations. See Mare clausum.
[Webster 1913 Suppl.]

Open verdict
Open verdict. (Law) A verdict on a preliminary investigation, finding the fact of a crime but not stating the criminal, or finding the fact of a violent death without disclosing the cause.
[Webster 1913 Suppl.]

Openwork
O"pen*work` (?), n. 1. Anything so constructed or manufactured (in needlework, carpentry, metal work, etc.) as to show openings through its substance; work that is perforated or pierced.
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2. (Mining) A quarry; an open cut. Raymond.
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opepe
opepe n. A large African forest tree (Nauclea diderrichii) yielding a strong hard yellow to golden brown lumber; sometimes placed in genus Sarcocephalus, and then called Sarcocephalus diderrichii.
Syn. -- Nauclea diderrichii, Sarcocephalus diderrichii.
[WordNet 1.5]

Opera
Op"er*a (&obreve_;p"&etilde_;r*&adot_;), n. [It., fr. opera work, composition, opposed to an improvisation, fr. L. opera pains, work, fr. opus, operis, work, labor: cf. F. opéra. See Operate.] 1. A drama, either tragic or comic, of which music forms an essential part; a drama wholly or mostly sung, consisting of recitative, arias, choruses, duets, trios, etc., with orchestral accompaniment, preludes, and interludes, together with appropriate costumes, scenery, and action; a lyric drama.
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2. The score of a musical drama, either written or in print; a play set to music.
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3. The house where operas are exhibited.
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Opera bouffe [F. opéra opera + bouffe comic, It. buffo], Opera buffa [It.], light, farcical, burlesque opera. -- Opera box, a partially inclosed portion of the auditorium of an opera house for the use of a small private party. -- Opera comique [F.], comic or humorous opera. -- Opera flannel, a light flannel, highly finished. Knight. -- Opera girl or Opera girls (Bot.), an East Indian plant (Mantisia saltatoria) of the Ginger family, sometimes seen in hothouses. It has curious flowers which have some resemblance to a ballet dancer, whence the popular name. Called also dancing girls. -- Opera glass, a short telescope with concave eye lenses of low power, usually made double, that is, with a tube and set of glasses for each eye; a lorgnette; -- so called because adapted for use at the opera, theater, etc. -- Opera hat, a gentleman's folding hat. -- Opera house, specifically, a theater devoted to the performance of operas. -- Opera seria [It.], serious or tragic opera; grand opera.
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Operable
Op"er*a*ble (?), a. Practicable. [Obs.]
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Operameter
Op`er*am"e*ter (?), n. [L. opus, operis, pl. opera work + -meter.] An instrument or machine for measuring work done, especially for ascertaining the number of rotations made by a machine or wheel in manufacturing cloth; a counter. Ure.
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Operancy
Operance
{ Op"er*ance (?), Op"er*an*cy (?), } n. The act of operating or working; operation. [R.]
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Operand
Op"er*and (?), n. [From neuter of L. operandus, gerundive of operari. See Operate.] (Math.) The symbol, quantity, or thing upon which a mathematical operation is performed; -- called also faciend.
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Operant
Op"er*ant (?), a. [L. operans, p. pr. of operari. See Operate.] Operative. [R.] Shak. -- n. An operative person or thing. [R.] Coleridge.
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operant conditioning
op"er*ant con*di"tion*ing (?), n. (Psychol.) A process for causing animals to behave in a specific manner by rewarding or punishing the animal each time it performs a certain act; after a time, the animal comes to associate the reward or punishment with the act, and will increase or decrease the frequency of performing that act.
[PJC]

Operate
Op"er*ate (?), v. i. [imp. & p. p. Operated (?); p. pr. & vb. n. Operating.] [L. operatus, p. p. of operari to work, fr. opus, operis, work, labor; akin to Skr. apas, and also to G. üben to exercise, OHG. uoben, Icel. æfa. Cf. Inure, Maneuver, Ure.] 1. To perform a work or labor; to exert power or strength, physical or mechanical; to act.
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2. To produce an appropriate physical effect; to issue in the result designed by nature; especially (Med.), to take appropriate effect on the human system.
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3. To act or produce effect on the mind; to exert moral power or influence.
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The virtues of private persons operate but on a few. Atterbury.
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A plain, convincing reason operates on the mind both of a learned and ignorant hearer as long as they live. Swift.
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4. (Surg.) To perform some manual act upon a human body in a methodical manner, and usually with instruments, with a view to restore soundness or health, as in amputation, lithotomy, etc.
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5. To deal in stocks or any commodity with a view to speculative profits. [Brokers' Cant]
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Operate
Op"er*ate, v. t. 1. To produce, as an effect; to cause.
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The same cause would operate a diminution of the value of stock. A. Hamilton.
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2. To put into, or to continue in, operation or activity; to work; as, to operate a machine.
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Operatical
Operatic
{ Op`er*at"ic (?), Op`er*at"ic*al (?), } a. Of or pertaining to the opera or to operas; characteristic of, suitable for, or resembling, the opera; as, an operatic voice.
[1913 Webster +PJC]

operating
operating adj. 1. pr. p. of operate; as, the operating conditions of the oxidation pond.
[WordNet 1.5]

2. having an effect or influence.
Syn. -- at work(predicate), in operation, operant.
[WordNet 1.5]

Operation
Op`er*a"tion (?), n. [L. operatio: cf. F. opération.] 1. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
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The pain and sickness caused by manna are the effects of its operation on the stomach. Locke.
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Speculative painting, without the assistance of manual operation, can never attain to perfection. Dryden.
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2. The method of working; mode of action.
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3. That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations.
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4. Effect produced; influence. [Obs.]
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The bards . . . had great operation on the vulgar. Fuller.
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5. (Math.) Something to be done; some transformation to be made upon quantities or mathematical objects, the transformation being indicated either by rules or symbols.
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6. (Surg.) Any methodical action of the hand, or of the hand with instruments, on the human body, to produce a curative or remedial effect, as in amputation, etc.
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Calculus of operations. See under Calculus.
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operational
operational adj. 1. of or pertaining to operations; as, operational procedure.
[WordNet 1.5]

2. Fit or ready for service; available and in working condition; as, an operational aircraft. Opposite of out-of-service.
Syn. -- functional, usable, useable, in order(predicate), in working order(predicate), operable.
[WordNet 1.5]

3. (Mil.) of or intended for or involved in military operations. Opposite of nonoperational.
[WordNet 1.5]

4. In force; not expired or annulled; -- of rules or laws.
[WordNet 1.5]

de facto apartheid still operational even in the `new' African nations Leslie Marmon Silko
[WordNet 1.5]

operationalism
operationalism n. (Philos.) the doctrine that the meaning of a proposition consists of the operations involved in defining, proving, or applying it.
[WordNet 1.5]

operationalist
operationalist adj. (Philos.) Of or pertaining to operationalism. operationalist doctrine
[WordNet 1.5]

operations
operations n. (Finance) financial transactions at a brokerage; having to do with the execution of trades and keeping customer records.
Syn. -- trading operations.
[WordNet 1.5]

Operative
Op"er*a*tive (?), a. [Cf.L. operativus, F. opératif.] 1. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive; operative laws.
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It holds in all operative principles. South.
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2. Producing the appropriate or designed effect; efficacious; effective; as, an operative dose, rule, or penalty.
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3. (Surg.) Based upon, or consisting of, an operation or operations; as, operative surgery.
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Operative
Op"er*a*tive, n. 1. A skilled worker; an artisan; esp., one who operates a machine in a mill or manufactory.
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2. One who acts as an agent of another, especially a detective or spy.
[PJC]

Operatively
Op"er*a*tive*ly, adv. In an operative manner.
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Operator
Op"er*a`tor (?), n. [L.] 1. One who, or that which, operates or produces an effect.
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2. (Surg.) One who performs some act upon the human body by means of the hand, or with instruments.
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3. A dealer in stocks or any commodity for speculative purposes; a speculator. [Brokers' Cant]
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4. (Math.) The symbol that expresses the operation to be performed; -- called also facient.
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5. A person who operates a telephone switchboard.
[PJC]

6. A person who schemes and maneuvers adroitly or deviously to achieve his/her purposes.
[PJC]

Operatory
Op"er*a*to*ry (?), n. A laboratory. [Obs.]
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Opercle
O"per*cle (?), n. [Cf. F. opercule. See Operculum.] 1. (Anat.) Any one of the bony plates which support the gill covers of fishes; an opercular bone.
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2. (Zool.) An operculum.
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Opercula
O*per"cu*la (?), n. pl. See Operculum.
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Opercular
O*per"cu*lar (?), a. Of, pertaining to, or like, an operculum.
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Opercular
O*per"cu*lar, n. (Anat.) The principal opercular bone or operculum of fishes.
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Operculated
Operculate
{ O*per"cu*late (?), O*per"cu*la`ted (?), } a. [L. operculatus, p. p. of operculare to furnish with a lid, fr. operculum lid.] 1. (Bot.) Closed by a lid or cover, as the capsules of the mosses.
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2. (Zool.) Having an operculum, or an apparatus for protecting the gills; -- said of shells and of fishes.
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Operculiferous
O*per`cu*lif"er*ous (?), a. [Operculum + -ferous.] (Zool.) Bearing an operculum.
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Operculiform
O*per"cu*li*form (?), a. [L. operculum a cover + -form: cf. F. operculiforme.] Having the form of a lid or cover.
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Operculigenous
O*per`cu*lig`e*nous (?), a. [Operculum + -genous.] (Zool.) Producing an operculum; -- said of the foot, or part of the foot, of certain mollusks.
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Operculum
O*per"cu*lum (?), n.; pl. L. Opercula (#), E. Operculums (#). [L., a cover or lid, fr. operire to cover.] 1. (Bot.) (a) The lid of a pitcherform leaf. (b) The lid of the urnlike capsule of mosses.
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2. (Anat.) (a) Any lidlike or operculiform process or part; as, the opercula of a dental follicle. (b) The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid. (c) The principal opercular bone in the upper and posterior part of the gill cover.
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3. (Zool.) (a) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda. (b) Any lid-shaped structure closing the aperture of a tube or shell.
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Operetta
Op`er*et"ta (?), n. [It., dim. of opera.] (Mus.) A short, light, musical drama.
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Operose
Op"er*ose` (?). a. [L. operosus, fr. opera pains, labor, opus, operis, work, labor.] Wrought with labor; requiring labor; hence, tedious; wearisome.Operose proceeding.” Burke. “A very operose calculation.” De Quincey. -- Op"er*ose`ly, adv. -- Op"er*ose`ness, n.
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Operosity
Op`er*os"i*ty (?), n. [L. operositas.] Laboriousness. [R.] Bp. Hall.
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Operous
Op"er*ous (?), a. Operose. [Obs.] Holder. -- Op"er*ous*ly, adv. [Obs.]
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Opertaneous
Op`er*ta"ne*ous (?), a. [L. opertaneus; operire to hide.] Concealed; private. [R.]
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Opetide
Ope"tide` (?), n. [Ope + tide.] Open time; -- applied to different things: (a) The early spring, or the time when flowers begin opening. [Archaic] Nares. (b) The time between Epiphany and Ash Wednesday wherein marriages were formerly solemnized publicly in churches. [Eng.] (c) The time after harvest when the common fields are open to all kinds of stock. [Prov. Eng.] Halliwell. [Written also opentide.]
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Ophelic
O*phel"ic (?), a. (Chem.) Of, pertaining to, or designating, a substance (called ophelic acid) extracted from a plant (Ophelia) of the Gentian family as a bitter yellowish sirup, used in India as a febrifuge and tonic.
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Ophicleide
Oph"i*cleide (?), n. [F. ophicléide, fr. Gr. 'o`fis a serpent + &unr_;, gen. &unr_;, a key. So named because it was in effect the serpent, an old musical instrument, with keys added.] (Mus.) A large brass wind instrument, formerly used in the orchestra and in military bands, having a loud tone, deep pitch, and a compass of three octaves; -- now generally supplanted by bass and contrabass tubas. It developed from the older wooden instrument called the serpent. Moore (Encyc. of Music).
[1913 Webster +PJC]

Ophidia
O*phid"i*a (?), prop. n. pl. [NL., fr. Gr. &unr_;, dim. of 'o`fis a snake.] (Zool.) The suborder of reptiles which includes the serpents; called also Serpentes.
[1913 Webster +PJC]

&hand_; The most important divisions are: the Solenoglypha, having erectile perforated fangs, as the rattlesnake; the Proteroglypha, or elapine serpents, having permanently erect fang, as the cobra; the Asinea, or colubrine serpents, which are destitute of fangs; and the Opoterodonta, or Epanodonta, blindworms, in which the mouth is not dilatable.
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Ophidian
O*phid"i*an (?), n. [Cf. F. ophidien.] (Zool.) One of the Ophidia; a snake or serpent.
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Ophidian
O*phid"i*an, a. [Cf. F. ophidien.] (Zool.) Of or pertaining to the Ophidia; belonging to serpents.
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Ophidioid
O*phid"i*oid (?), a. [Ophidion + -oid.] (Zool.) Of or pertaining to the Ophidiidae, a family of fishes which includes many slender species. -- n. One of the Ophidiidae.
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Ophidion
O*phid"i*on (?), n.; pl. Ophidia (#). [L., fr. Gr. &unr_; little snake, fr. 'o`fis a serpent.] (Zool.) The typical genus of ophidioid fishes. [Written also Ophidium.] See Illust. under Ophidioid.
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Ophidious
O*phid"i*ous (?), a. Ophidian.
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Ophiodontidae
Ophiodontidae prop. n. A natural family of fishes closely related to greenlings (fish of the genus Hexagrammos).
Syn. -- family Ophiodontidae.
[WordNet 1.5]

Ophioglossaceae
Ophioglossaceae prop. n. A natural family of succulent ferns cosmopolitan in distribution.
Syn. -- family Ophioglossaceae.
[WordNet 1.5]

Ophioglossales
Ophioglossales prop. n. An order coextensive with the family Ophioglossaceae.
Syn. -- order Ophioglossales.
[WordNet 1.5]

Ophiolatry
O`phi*ol"a*try (ō`f&ibreve_;*&obreve_;l"&adot_;*tr&ybreve_;), n. [Gr. 'o`fis serpent + latrei`a worship.] The worship of serpents.
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Ophiological
Ophiologic
{ O`phi*o*log"ic (?), O`phi*o*log"ic*al (?), } a. Of or pertaining to ophiology.
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Ophiologist
O`phi*ol"o*gist (?), n. One versed in the natural history of serpents.
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Ophiology
O`phi*ol"o*gy (?), n. [Gr. &unr_; a serpent + -logy: cf. F. ophioloqie.] That part of natural history which treats of the ophidians, or serpents.
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Ophiomancy
O"phi*o*man`cy (?), n. [Gr. 'o`fis a serpent + -mancy: cf. F. ophiomantie.] Divination by serpents, as by their manner of eating, or by their coils.
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Ophiomorpha
O`phi*o*mor"pha (?), n. pl. [NL. See Ophiomorphous.] (Zool.) An order of tailless amphibians having a slender, wormlike body with regular annulations, and usually with minute scales imbedded in the skin. The limbs are rudimentary or lacking. It includes the caecilians. Called also Gymnophiona and Ophidobatrachia.
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Ophiomorphite
O`phi*o*mor"phite (?), n. [Gr. 'o`fis a serpent + morfh` form.] (Paleon.) An ammonite.
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Ophiomorphous
O`phi*o*mor"phous (?), a. [Gr. 'o`fis a serpent + -morphous.] Having the form of a serpent.
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Ophiophagous
O`phi*oph"a*gous (?), a. [Gr. 'o`fis a serpent + &unr_; to eat: cf. F. ophiophage.] (Zool.) Feeding on serpents; -- said of certain birds and reptiles.
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Ophiophagus
O`phi*oph"a*gus, n. [NL. See Ophiophagous.] (Zool.) A genus of venomous East Indian snakes, which feed on other snakes. Ophiophagus elaps is said to be the largest and most deadly of poisonous snakes.
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Ophism
Oph"ism (?), n. 1. Doctrines and rites of the Ophites.
[Webster 1913 Suppl.]

2. Serpent worship or the use of serpents as magical agencies.
[Webster 1913 Suppl.]

Ophite
O"phite (?), a. [Gr. 'ofi`ths, fr. 'o`fis a serpent.] Of or pertaining to a serpent. [Obs.]
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Ophite
O"phite, n. [L. ophites, Gr. 'ofi`ths (sc. &unr_;), a kind of marble spotted like a serpent: cf. F. ophite.] (Min.) A greenish spotted porphyry, being a diabase whose pyroxene has been altered to uralite; -- first found in the Pyreness. So called from the colored spots which give it a mottled appearance. -- O*phi"ic (#), a.
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Ophite
O"phite, n. [L. Ophitae, pl. See Ophite, a.] (Eccl. Hist.) A mamber of a Gnostic serpent-worshiping sect of the second century.
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Ophiuchus
O`phi*u"chus (?), n. [L., fr. Gr. &unr_;, lit., holding a serpent; 'o`fis a serpent + &unr_; to hold.] (Astron.) A constellation in the Northern Hemisphere, delineated as a man holding a serpent in his hands; -- called also Serpentarius.
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Ophiura
O`phi*u"ra (?), n. [NL., from Gr. 'o`fis snake + 'oyra` a tail.] (Zool.) A genus of ophiurioid starfishes.
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Ophiuran
O`phi*u"ran (?), a. (Zool.) Of or pertaining to the Ophiurioidea. -- n. One of the Ophiurioidea.
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Ophiurid
O`phi*u"rid (?), n. (Zool.) Same as Ophiurioid.
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Ophiurida
O`phi*u"ri*da (?), n. pl. [NL.] (Zool.) Same as Ophiurioidea.
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Ophiurioid
O`phi*u"ri*oid (?), a. (Zool.) Of or pertaining to the Ophiurioidea. -- n. One of the Ophiurioidea. [Written also ophiuroid.]
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Ophiuroidea
Ophiurioidea
{ ‖O`phi*u`ri*oi"de*a (?), ‖O`phi*u*roi"de*a (?), } n. pl. [NL., fr. Gr. 'o`fis serpent + 'oyra` tail + e'i^dos form.] (Zool.) A class of star-shaped echinoderms having a disklike body, with slender, articulated arms, which are not grooved beneath and are often very fragile; -- called also Ophiuroida and Ophiuridea. See Illust. under Brittle star.
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Ophryon
Oph"ry*on (?), n. [NL., fr. Gr. &unr_;, &unr_;, the brow.] (Anat.) The supraorbital point.
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Ophthalmia
Oph*thal"mi*a (&obreve_;f*thăl"m&ibreve_;*&adot_;), n. [F. ophthalmie, L. ophthalmia, fr. Gr. 'ofqalmi`a, fr. 'ofqalmo`s the eye, akin to E. optic. See Optic.] (Med.) An inflammation of the membranes or coats of the eye or of the eyeball.
Syn. -- ophthalmitis.
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Ophthalmic
Oph*thal"mic (&obreve_;f*thăl"m&ibreve_;k; 277), a. [Gr. 'ofqalmiko`s: cf. F. ophthalmique. See Ophthalmia.] (Anat.) Of, pertaining to, or in the region of, the eye; ocular; as the ophthalmic, or orbitonasal, nerve, a division of the trigeminal, which gives branches to the lachrymal gland, eyelids, nose, and forehead.
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Ophthalmic region (Zool.), the space around the eyes.
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Ophthalmite
Oph*thal"mite (?), n. [Gr. 'ofqalmo`s the eye.] (Zool.) An eyestalk; the organ which bears the compound eyes of decapod Crustacea.
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ophthalmitis
ophthalmitis n. (Med.) severe conjunctivitis; ophthalmia.
Syn. -- ophthalmia.
[WordNet 1.5]

Ophthalmological
Oph*thal`mo*log"ic*al (?), a. Of or pertaining to ophthalmology.
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Ophthalmologist
Oph`thal*mol"o*gist (?), n. One skilled in ophthalmology; an oculist.
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Ophthalmology
Oph`thal*mol"o*gy (?), n. [Gr. 'ofqalmo`s the eye + -logy: cf. F. ophthalmologie.] The science which treats of the structure, functions, and diseases of the eye.
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Ophthalmometer
Oph`thal*mom"e*ter, n. [Gr. 'ofqalmo`s eye + -meter.] (Physiol.) An instrument devised by Helmholtz for measuring the size of a reflected image on the convex surface of the cornea and lens of the eye, by which their curvature can be ascertained.
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Ophthalmoscope
Oph*thal"mo*scope (?), n. [From Gr. 'ofqalmo`s the eye + -scope.] (Physiol.) An instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens. -- Oph*thal`mo*scop"ic (#), a.
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Ophthalmoscopy
Oph`thal*mos"co*py (?), n. [Cf. F. ophthalmoscopie.] 1. A branch of physiognomy which deduces the knowledge of a person's temper and character from the appearance of the eyes.
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2. Examination of the eye with the ophthalmoscope.
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Ophthalmy
Oph*thal"my (&obreve_;f*thăl"m&ybreve_;), n. Same as Ophthalmia.
Syn. -- ophthalmitis.
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Opianic
O`pi*an"ic (?), a. [From Opium.] (Chem.) Of, pertaining to, or designating, an organic acid obtained by the oxidation of narcotine.
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opianine
o"pi*a*nine (?), n. (Chem.) An alkaloid (C22H23NO7) found in small quantity in opium. It is identical with narcotine. It is present in amounts up to 11% in Papaver somniferum, and is used clinically as an antitussive. MI11
Syn. -- noscapine; narcosine; opian.
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Opianyl
O"pi*a*nyl, n. [Opianic + -yl.] (Chem.) Same as Meconin.
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Opiate
O"pi*ate (?), n. [From Opium: cf. F. opiat.] 1. Originally, a medicine of a thicker consistency than sirup, prepared with opium. Parr.
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2. Any medicine that contains opium, and has the quality of inducing sleep or repose; a narcotic.
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3. Anything which induces rest or inaction; that which quiets uneasiness.
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They chose atheism as an opiate. Bentley.
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Opiate
O"pi*ate, a. [See Opium.] Inducing sleep; somniferous; narcotic; hence, anodyne; causing rest, dullness, or inaction; as, the opiate rod of Hermes. Milton.
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Opiate
O"pi*ate (?), v. t. To subject to the influence of an opiate; to put to sleep. [R.] Fenton.
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Opiated
O"pi*a`ted (?), a. 1. Mixed with opiates.
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2. Under the influence of opiates.
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Opie
O"pie (?), n. Opium. [Obs.] Chaucer.
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Opiferous
O*pif"er*ous (?), a. [L. opifer; ops, opis, help + ferre to bear.] Bringing help. [R.]
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Opifice
Op"i*fice (?), n. [L. opificium, fr. opifex workman. See Office.] Workmanship. [Obs.] Bailey.
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Opificer
O*pif"i*cer (?), n. An artificer; a workman. [Obs.] “The almighty opificer.” Bentley.
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Opinable
O*pin"a*ble (?), a. [L. opinabilis.] Capable of being opined or thought. Holland.
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Opination
Op`i*na"tion (?), n. [L. opinatio. See Opine,] The act of thinking; a supposition. [Obs.]
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Opinative
O*pin"a*tive (?), a. Obstinate in holding opinions; opinionated. [Obs.] -- O*pin"a*tive*ly, adv. [Obs.] Burton. Sir T. More.
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Opinator
Op"i*na`tor (?), n. [L.] One fond of his own opinions; one who holds an opinion. [Obs.] Glanvill.
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Opine
O*pine" (?), v. t. & i. [imp. & p. p. Opined (?); p. pr. & vb. n. Opining.] [L. opinari, p. p. opinatus; akin to opinus (in comp.) thinking, and perh. to E. apt: cf. F. opiner.] To have an opinion; to judge; to think; to suppose. South.
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Opiner
O*pin"er (?), n. One who opines. Jer. Taylor.
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Opiniatre
Opiniaster
{ O`pin*ias"ter (?), O`pin*ia"tre (?), } a. [OF. opiniastre, F. opiniâtre. See Opinion.] Opinionated. [Obs.] Sir W. Raleigh.
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Opiniastrous
O`pin*ias"trous (?), a. See Opiniaster. [Obs.].
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Opiniate
O*pin"iate (?), v. t. To hold or maintain persistently. [Obs.] Barrow.
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Opiniated
O*pin"ia*ted (?), a. Opinionated. [Obs.]
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Opiniative
O*pin"ia*tive (?), a. Opinionative. Glanvill. -- O*pin"ia*tive*ly, adv. -- O*pin"ia*tive*ness, n.
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Opiniatre
Opiniator
{ O`pin*ia"tor, O`pin*ia"tre } (?), n. One who is opinionated. [Obs.] South. Barrow.
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Opiniatre
O`pin*ia"tre, a. See Opiniaster. [Obs.] Locke.
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Opiniatrety
O`pin*iat"re*ty (?), n. [Cf. F. opiniâtreté.] Obstinacy in opinions. [Written also opiniatry.] [Obs.]
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Opinicus
O*pin"i*cus (&unr_;), n. (Her.) An imaginary animal borne as a charge, having wings, an eagle's head, and a short tail; -- sometimes represented without wings.
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Opining
O*pin"ing (?), n. Opinion. [Obs.] Jer. Taylor.
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Opinion
O*pin"ion (?), n. [F., from L. opinio. See Opine.] 1. That which is opined; a notion or conviction founded on probable evidence; belief stronger than impression, less strong than positive knowledge; settled judgment in regard to any point of knowledge or action.
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Opinion is when the assent of the understanding is so far gained by evidence of probability, that it rather inclines to one persuasion than to another, yet not without a mixture of incertainty or doubting. Sir M. Hale.
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I can not put off my opinion so easily. Shak.
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2. The judgment or sentiment which the mind forms of persons or things; estimation.
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I have bought golden opinions from all sorts of people. Shak.
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Friendship . . . gives a man a peculiar right and claim to the good opinion of his friend. South.
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However, I have no opinion of those things. Bacon.
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3. Favorable estimation; hence, consideration; reputation; fame; public sentiment or esteem. [Obs.]
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Thou hast redeemed thy lost opinion. Shak.
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This gained Agricola much opinion, who . . . had made such early progress into laborious . . . enterprises. Milton.
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4. Obstinacy in holding to one's belief or impression; opiniativeness; conceitedness. [Obs.] Shak.
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5. (Law.) The formal decision, or expression of views, of a judge, an umpire, a counselor, or other party officially called upon to consider and decide upon a matter or point submitted.
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To be of opinion, to think; to judge. -- To hold opinion with, to agree with. [Obs.] Shak.
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Syn. -- Sentiment; notion; persuasion; idea; view; estimation. See Sentiment.
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Opinion
O*pin"ion, v. t. To opine. [Obs.]
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Opinionable
O*pin"ion*a*ble (?), a. Being, or capable of being, a matter of opinion; that can be thought; not positively settled; as, an opinionable doctrine. C. J. Ellicott.
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Opinionate
O*pin"ion*ate (?), a. Opinionated.
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Opinionated
O*pin"ion*a`ted (?), a. Stiff in opinion; firmly or unduly adhering to one's own opinion or to preconceived notions; obstinate in opinion. Sir W. Scott.
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Opinionately
O*pin"ion*ate*ly (?), adv. Conceitedly. Feltham.
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Opinionatist
O*pin"ion*a*tist (?), n. An opinionist. [Obs.]
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Opinionative
O*pin"ion*a*tive, a. 1. Unduly attached to one's own opinions; opinionated. Milton.
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2. Of the nature of an opinion; conjectured. [Obs.] “Things both opinionative and practical.” Bunyan. -- O*pin"ion*a*tive*ly, adv. -- O*pin"ion*a*tive*ness, n.
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Opinionator
O*pin"ion*a`tor (?), n. An opinionated person; one given to conjecture. [Obs.] South.
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Opinioned
O*pin"ioned (?), a. Opinionated; conceited.
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His opinioned zeal which he thought judicious. Milton.
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Opinionist
O*pin"ion*ist (?), n. [Cf. F. opinioniste.] One fond of his own notions, or unduly attached to his own opinions. Glanvill.
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Opiparous
O*pip"a*rous (?), a. [L. opiparus, fr. ops, opis, riches + parare to provide.] Sumptuous. [Obs.] -- O*pip"a*rous*ly, adv. [Obs.] E. Waterhouse.
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Opisometer
Op`i*som"e*ter (?), n. [Gr. &unr_; backwards + -meter.] An instrument with a revolving wheel for measuring a curved line, as on a map.
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Opisthion
O*pis"thi*on (?), n. [NL., fr. Gr. &unr_; hinder.] (Anat.) The middle of the posterior, or dorsal, margin of the great foramen of the skull.
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Opisthobranchiata
Opisthobranchia
{ ‖O*pis`tho*bran"chi*a (?), O*pis`tho*bran`chi*a"ta (?), } n. pl. [NL., from Gr. 'o`pisqen behind + &unr_; gills.] (Zool.) A division of gastropod Mollusca, in which the breathing organs are usually situated behind the heart. It includes the tectibranchs and nudibranchs.
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Opisthobranchiate
O*pis`tho*bran"chi*ate (?), a. (Zool.) Of or pertaining to the Opisthobranchiata. -- n. One of the Opisthobranchiata.
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Opisthocoelous
Opisthocoelian
{ O*pis`tho*coe"li*an (?), O*pis`tho*coe"lous (?), } a. [Gr. 'o`pisqen behind + koi^los hollow,] (Anat.) Concave behind; -- applied especially to vertebrae in which the anterior end of the centrum is convex and the posterior concave.
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Opisthodome
O*pis"tho*dome (?), n. [L. opisthodomus, Gr. &unr_;; 'o`pisqen behind + do`mos house: cf. F. opisthodome.] (Arch.) A back chamber; especially, that part of the naos, or cella, farthest from the main entrance, sometimes having an entrance of its own, and often used as a treasury.
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Opisthoglypha
O*pis`tho*glyph"a (?), n. pl. [NL., from Gr. 'o`pisqen behind + &unr_; to carve.] (Zool.) A division of serpents which have some of the posterior maxillary teeth grooved for fangs.
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Opisthography
Op`is*thog"ra*phy (?), n. [Gr. 'o`pisqen behind + -graphy.] A writing upon the back of anything, as upon the back of a leaf or sheet already written upon on one side. [R.] Scudamore.
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Opisthomi
Op`is*tho"mi (?), n. pl. [NL., fr. Gr. 'o`pisqen behind + &unr_; the shoulder.] (Zool.) An order of eellike fishes having the scapular arch attached to the vertebrae, but not connected with the skull.
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Opisthopulmonate
O*pis`tho*pul"mo*nate (?), a.[Gr. 'o`pisqen behind + E. pulmonate.] (Zool.) Having the pulmonary sac situated posteriorly; -- said of certain air-breathing Mollusca.
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Opisthotic
Op`is*thot"ic (?), n. [Gr. 'o`pisqen behind + &unr_;, &unr_;, ear.] (Anat.) The inferior and posterior of the three elements forming the periotic bone.
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Opisthotonos
Op`is*thot"o*nos (?), n. [NL., from Gr. &unr_; backwards + &unr_; a stretching.] (Med.) A tetanic spasm in which the body is bent backwards and stiffened.
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Opitulation
O*pit`u*la"tion (?), n. [L. opitulatio, fr. opitulari to bring help.] The act of helping or aiding; help. [Obs.] Bailey.
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Opium
O"pi*um (?), n. [L., fr. Gr. &unr_; poppy juice, dim. of &unr_; vegetable juice.] (Chem.) The inspissated juice of the Papaver somniferum, or white poppy.
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&hand_; Opium is obtained from incisions made in the capsules of the plant, and the best flows from the first incision. It is imported into Europe and America chiefly from the Levant, and large quantities are sent to China from India, Persia, and other countries. It is of a brownish yellow color, has a faint smell, and bitter and acrid taste. It is a stimulant narcotic poison, which may produce hallicinations, profound sleep, or death. It is much used in medicine to soothe pain and inflammation, and is smoked as an intoxicant with baneful effects.
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Opium joint, a low resort of opium smokers. [Slang]
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Ople tree
O"ple tree` (?). [L. opulus a kind of maple tree.] The witch-hazel. [Obs.] Ainsworth.
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Opobalsamum
Opobalsam
{ Op`o*bal"sam (?), ‖Op`o*bal"sa*mum (?), } n. [L. opobalsamum, Gr. &unr_;; &unr_; vegetable juice + &unr_; balsam.] (Med.) The old name of the aromatic resinous juice of the Balsamodendron opobalsamum, now commonly called balm of Gilead. See under Balm.
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Opodeldoc
Op`o*del"doc (?), n. [So called by Paracelsus. The first syllable may be fr. Gr. &unr_; vegetable juice.] 1. A kind of plaster, said to have been invented by Mindererus, -- used for external injuries. [Obs.]
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2. A saponaceous, camphorated liniment; a solution of soap in alcohol, with the addition of camphor and essential oils; soap liniment.
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Opolchenie
Op`ol*che"ni*e (?), n. [Russ., fr. opolchit' to make an army, polk army. Cf. Folk.] (Russia) See Army organization, above.
[Webster 1913 Suppl.]

Opopanax
O*pop"a*nax (?), n. [L., fr. Gr. &unr_;; &unr_; vegetable juice + pa`nax, pa`nakes, a kind of plant: cf. F. opopanax.] The inspissated juice of an umbelliferous plant (the Opoponax Chironum), brought from Turkey and the East Indies in loose granules, or sometimes in larger masses, of a reddish yellow color, with specks of white. It has a strong smell and acrid taste, and was formerly used in medicine as an emmenagogue and antispasmodic. Dunglison.
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Opoterodonta
Opoterodonta (?), prop. n. pl. An older division of the suborder Ophidia of serpents; it includes those snakes in which the mouth is not dilatable.
[PJC]

Opossum
O*pos"sum (?), n. [Of N. American Indian origin.] (Zool.) Any American marsupial of the genera Didelphys and Chironectes; called also possum. The common species of the United States is Didelphys Virginiana.
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&hand_; Several related species are found in South America. The water opossum of Brazil (Chironectes variegatus), which has the hind feet, webbed, is provided with a marsupial pouch and with cheek pouches. It is called also yapock.
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Opossum mouse. (Zool.) See Flying mouse, under Flying. -- Opossum shrimp (Zool.), any schizopod crustacean of the genus Mysis and allied genera. See Schizopoda.
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Oppidan
Op"pi*dan (?), a. [L. oppidanus, fr. oppidum town.] Of or pertaining to a town. Howell.
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Oppidan
Op"pi*dan, n. 1. An inhabitant of a town.
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2. A student of Eton College, England, who is not a King's scholar, and who boards in a private family.
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Oppignerate
Op*pig"ner*ate (?), v. i. [L. oppigneratus, p. p. of oppignerare to pawn. See Ob-, and Pignerate.] To pledge; to pawn. [Obs.] Bacon.
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Oppilate
Op"pi*late (?), v. t. [imp. & p. p. Oppilated (?); p. pr. & vb. n. Oppilating (?).] [L. oppilatus, p. p. of oppilare to stop up; ob (see Ob-) + pilare to ram down, to thrust.] To crowd together; to fill with obstructions; to block up. [Obs.] Cockeram.
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Oppilation
Op`pi*la"tion (?), n. [L. oppilatio: cf. F. opilation.] The act of filling or crowding together; a stopping by redundant matter; obstruction, particularly in the lower intestines. Jer. Taylor.
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Oppilative
Op`pi*la*tive (?), a. [Cf. F. opilatif. See Oppilate.] Obstructive. [Obs.] Sherwood.
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Oppleted
Opplete
{ Op*plete" (?), Op*plet"ed (?), } a. [L. oppletus, p. p. of opplere to fill up; ob (see Ob-) + plere to fill.] Filled; crowded. [Obs.] Johnson.
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Oppletion
Op*ple"tion (?), n. The act of filling up, or the state of being filled up; fullness. [Obs.]
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Oppone
Op*pone" (?), v. t. [L. opponere. See Opponent.] To oppose. [Obs.] B. Jonson.
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Opponency
Op*po"nen*cy (?), n. The act of opening an academical disputation; the proposition of objections to a tenet, as an exercise for a degree. [Eng.] Todd.
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Opponent
Op*po"nent (?), a. [L. opponens, -entis, p. pr. of opponere to set or place against, to oppose; ob (see Ob-) + ponere to place. See Position.] Situated in front; opposite; hence, opposing; adverse; antagonistic. Pope.
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Opponent
Op*po"nent, n. 1. One who opposes; an adversary; an antagonist; a foe. Macaulay.
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2. One who opposes in a disputation, argument, or other verbal controversy; specifically, one who attacks some thesis or proposition, in distinction from the respondent, or defendant, who maintains it.
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How becomingly does Philopolis exercise his office, and seasonably commit the opponent with the respondent, like a long-practiced moderator! Dr. H. More.
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Syn. -- Antagonist; opposer; foe. See Adversary.
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Opportune
Op`por*tune" (?), a. [F. opporiun, L. opportunus, lit., at or before the port; ob (see Ob-) + a derivative of portus port, harbor. See Port harbor.] Convenient; ready; hence, seasonable; timely. Milton.
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This is most opportune to our need. Shak.
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-- Op`por*tune"ly, adv. -- Op`por*tune"ness, n.
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Opportune
Op`por*tune", v. t. To suit. [Obs.] Dr. Clerke(1637).
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Opportunism
Op`por*tun"ism (?), n. [Cf. F. opportunisme.] The art or practice of taking advantage of opportunities or circumstances, or of seeking immediate advantage with little regard for ultimate consequences. [Recent]
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Opportunist
Op`por*tun"ist, n. [Cf. F. opportuniste.] One who advocates or practices opportunism. [Recent]
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opportunistic
opportunistic adj. 1. taking immediate advantage, often unethically, of any circumstance of possible benefit; practising opportunism. [wns=1]
Syn. -- opportunist, timeserving.
[WordNet 1.5]

2. (Med.) Causing disease only when the immune system of the host has been weakened, or other damage to the host provides special opportunity for invasion; -- of microorganisms or infectious diseases; as, opportunistic pathogens may infect a burn site; AIDS predisposes a patient to opportunistic infection.
[PJC]

Opportunity
Op`por*tu"ni*ty (?), n.; pl. Opportunities (#). [F. opportunité, L. opportunitas. See Opportune.] 1. Fit or convenient time or situation; a time or place permitting or favorable for the execution of a purpose; a suitable combination of conditions; suitable occasion; chance.
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A wise man will make more opportunities than he finds. Bacon.
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2. Convenience of situation; fitness. [Obs.]
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Hull, a town of great strength and opportunity, both to sea and land affairs. Milton.
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3. Importunity; earnestness. [Obs.] Jer. Taylor.
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Syn. -- Occasion; convenience; occurrence. -- Opportunity, Occasion. An occasion is that which falls in our way, or presents itself in the course of events; an opportunity is a convenience or fitness of time, place, etc., for the doing of a thing. Hence, occasions often make opportunities. The occasion of sickness may give opportunity for reflection.
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Opposability
Op*pos`a*bil"i*ty (?), n. The condition or quality of being opposable.
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In no savage have I ever seen the slightest approach to opposability of the great toe, which is the essential distinguishing feature of apes. A. R. Wallace.
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Opposable
Op*pos"a*ble (?), a. 1. Capable of being opposed or resisted.
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2. Capable of being placed opposite something else; as, the thumb is opposable to the forefinger.
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Opposal
Op*pos"al (?), n. Opposition. [R.] Sir T. Herbert.
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Oppose
Op*pose" (?), v. t. [imp. & p. p. Opposed (?); p. pr. & vb. n. Opposing.] [F. opposer. See Ob-, Pose, and cf.2d Appose, Puzzle, n. Cf.L. opponere, oppositum.] 1. To place in front of, or over against; to set opposite; to exhibit.
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Her grace sat down . . .
In a rich chair of state; opposing freely
The beauty of her person to the people.
Shak.
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2. To put in opposition, with a view to counterbalance or countervail; to set against; to offer antagonistically.
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I may . . . oppose my single opinion to his. Locke.
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3. To resist or antagonize by physical means, or by arguments, etc.; to contend against; to confront; to resist; to withstand; as, to oppose the king in battle; to oppose a bill in Congress.
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4. To compete with; to strive against; as, to oppose a rival for a prize.
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I am . . . too weak
To oppose your cunning.
Shak.
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Syn. -- To combat; withstand; contradict; deny; gainsay; oppugn; contravene; check; obstruct.
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Oppose
Op*pose" (&obreve_;p*pōz"), v. i. 1. To be set opposite. Shak.
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2. To act adversely or in opposition; -- with against or to; as, a servant opposed against the act. [Obs.] Shak.
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3. To make objection or opposition in controversy.
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opposing
opposed
opposed (&obreve_;p*pōzd"), opposing (&obreve_;p*pō"z&ibreve_;ng), adj. 1. characterized by active opposition; as, two bitterly opposing schools of thought.
Syn. -- antagonistic, antipathetic, antipathetical, opponent.
[WordNet 1.5]

2. acting in opposition to; as, the opposing sector of the same muscle group.
[WordNet 1.5]

Opposeless
Op*pose"less, a. Not to be effectually opposed; irresistible. [Obs.] “Your great opposeless wills.” Shak.
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opposer
op*pos"er (&obreve_;p*pōz"&etilde_;r), n. One who opposes; an opponent; an antagonist; an adversary.
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opposite
op"po*site (&obreve_;p"p&ouptack_;*z&ibreve_;t or &obreve_;p"p&ouptack_;*s&ibreve_;t), a. [F., fr. L. oppositus, p. p. of opponere. See Opponent.] 1. Placed over against; standing or situated over against or in front; facing; -- often with to; as, a house opposite to the Exchange; the concert hall and the state theater stood opposite each other on the plaza.
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2. Situated on the other end of an imaginary line passing through or near the middle of an intervening space or object; -- of one object with respect to another; as, the office is on the opposite side of town; -- also used both to describe two objects with respect to each other; as, the stores were on opposite ends of the mall.
[PJC]

3. Applied to the other of two things which are entirely different; other; as, the opposite sex; the opposite extreme; antonyms have opposite meanings.
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4. Extremely different; inconsistent; contrary; repugnant; antagonistic.
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Novels, by which the reader is misled into another sort of pleasure opposite to that which is designed in an epic poem. Dryden.
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Particles of speech have divers, and sometimes almost opposite, significations. Locke.
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5. (Bot.) (a) Set over against each other, but separated by the whole diameter of the stem, as two leaves at the same node. (b) Placed directly in front of another part or organ, as a stamen which stands before a petal.
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Opposite
Op"po*site, n. 1. One who opposes; an opponent; an antagonist. [Obs.]
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The opposites of this day's strife. Shak.
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2. That which is opposed or contrary in character or meaning; as, sweetness and its opposite; up is the opposite of down.
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The virtuous man meets with more opposites and opponents than any other. Landor.
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polar opposite that which is conspicuously different in most important respects.
[PJC]

Oppositely
Op"po*site*ly, adv. In a situation to face each other; in an opposite manner or direction; adversely.
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Winds from all quarters oppositely blow. May.
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Oppositeness
Op"po*site*ness, n. The quality or state of being opposite.
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Oppositifolious
Op*pos`i*ti*fo"li*ous (?), a. [See Opposite, Folious.] (Bot.) Placed at the same node with a leaf, but separated from it by the whole diameter of the stem; as, an oppositifolious peduncle.
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Opposition
Op`po*si"tion (?), n. [F., fr. L. oppositio. See Opposite.] 1. The act of opposing; an attempt to check, restrain, or defeat; resistance.
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The counterpoise of so great an opposition. Shak.
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Virtue which breaks through all opposition. Milton.
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2. The state of being placed over against; situation so as to front something else. Milton.
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3. Repugnance; contrariety of sentiment, interest, or purpose; antipathy. Shak.
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4. That which opposes; an obstacle; specifically, the aggregate of persons or things opposing; hence, in politics and parliamentary practice, the party opposed to the party in power.
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5. (Astron.) The situation of a heavenly body with respect to another when in the part of the heavens directly opposite to it; especially, the position of a planet or satellite when its longitude differs from that of the sun 180°; -- signified by the symbol &unr_;; as, &unr_; &jupiter_; &sun_;, opposition of Jupiter to the sun.
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6. (Logic) The relation between two propositions when, having the same subject and predicate, they differ in quantity, or in quality, or in both; or between two propositions which have the same matter but a different form.
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Oppositionist
Op`po*si"tion*ist, n. One who belongs to the opposition party. Praed.
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Oppositipetalous
Op*pos`i*ti*pet"al*ous (?), a. [See Opposite, and Petal.] (Bot.) Placed in front of a petal.
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Oppositisepalous
Op*pos`i*ti*sep"al*ous (?), a. [See Opposite, and Sepal.] (Bot.) Placed in front of a sepal.
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Oppositive
Op*pos`i*tive (?), a. [Cf. F. oppositif. See Opposite.] Capable of being put in opposition. Bp. Hall.
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Oppress
Op*press" (?), v. t. [imp. & p. p. Oppressed (?); p. pr. & vb. n. Oppressing.] [F. oppresser, LL. oppressare, fr. L. oppressus, p. p. of opprimere; ob (see Ob-) + premere to press. See Press.] 1. To impose excessive burdens upon; to overload; hence, to treat with unjust rigor or with cruelty. Wyclif.
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For thee, oppressèd king, am I cast down. Shak.
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Behold the kings of the earth; how they oppress
Thy chosen!
Milton.
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2. To ravish; to violate. [Obs.] Chaucer.
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3. To put down; to crush out; to suppress. [Obs.]
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The mutiny he there hastes to oppress. Shak.
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4. To produce a sensation of weight in (some part of the body); as, my lungs are oppressed by the damp air; excess of food oppresses the stomach.
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oppressed
oppressed adj. having excessive or unfair burdens imposed.
Syn. -- downtrodden, persecuted.
[WordNet 1.5 +PJC]

Oppression
Op*pres"sion (?), n. [F., fr. L. oppressio.] 1. The act of oppressing, or state of being oppressed.
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2. That which oppresses; a hardship or injustice; cruelty; severity; tyranny. “The multitude of oppressions.” Job xxxv. 9.
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3. A sense of heaviness or obstruction in the body or mind; depression; dullness; lassitude; as, an oppression of spirits; an oppression of the lungs.
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There gentle Sleep
First found me, and with soft oppression seized
My drowsed sense.
Milton.
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4. Ravishment; rape. [Obs.] Chaucer.
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Oppressive
Op*press"ive (?), a. [Cf. F. oppressif.] 1. Unreasonably burdensome; unjustly severe, rigorous, or harsh; as, oppressive taxes; oppressive exactions of service; an oppressive game law. Macaulay.
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2. Using oppression; tyrannical; as, oppressive authority or commands.
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3. Heavy; overpowering; hard to be borne; creating a sense of heavy burden; as, oppressive grief or woe; oppressive heat or humidity; an oppressive workload.
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To ease the soul of one oppressive weight. Pope.
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-- Op*press"ive*ly, adv. -- Op*press"ive*ness, n.
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Oppressor
Op*press"or (?), n. [L.] One who oppresses; one who imposes unjust burdens on others; one who harasses others with unjust laws or unreasonable severity.
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The orphan pines while the oppressor feeds. Shak.
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To relieve the oppressed and to punish the oppressor. Swift.
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Oppressure
Op*pres"sure (?), n. Oppression. [Obs.]
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Opprobrious
Op*pro"bri*ous (?), a. [L. opprobriosus, fr. opprobrium. See Opprobrium.] 1. Expressive of opprobrium; attaching disgrace; reproachful; scurrilous; as, opprobrious language.
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They . . . vindicate themselves in terms no less opprobrious than those by which they are attacked. Addison.
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2. Infamous; despised; rendered hateful; as, an opprobrious name.
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This dark, opprobrious den of shame. Milton.
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-- Op*pro"bri*ous*ly, adv. -- Op*pro"bri*ous*ness, n.
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Opprobrium
Op*pro"bri*um (?), n. [L., fr. ob (see Ob-) + probrum reproach, disgrace.] A state of disgrace; infamy; reproach mingled with contempt; odium{3}.
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2. Abusive language.
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Being both dramatic author and dramatic performer, he found himself heir to a twofold opprobrium. De Quincey.
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Opprobry
Op*pro"bry (?), n. Opprobrium. [Obs.] Johnson.
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Oppugn
Op*pugn" (?), v. t. [imp. & p. p. Oppugned (?); p. pr. & vb. n. Oppugning.] [OF. oppugner, L. oppugnare; ob (see Ob-) + pugnare to fight. See Impugn.] To fight against; to attack; to be in conflict with; to oppose; to resist.
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They said the manner of their impeachment they could not but conceive did oppugn the rights of Parliament. Clarendon.
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Oppugnancy
Op*pug"nan*cy (?), n. [See Oppugnant.] The act of oppugning; opposition; resistance. Shak.
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Oppugnant
Op*pug"nant (?), a. [L. oppugnans, p. pr. of oppugnare. See Oppugn.] Tending to awaken hostility; hostile; opposing; warring.Oppugnant forces.” I. Taylor. -- n. An opponent. [R.] Coleridge.
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Oppugnation
Op`pug*na"tion (?), n. [L. oppugnatio: cf. OF. oppugnation.] Opposition. [R.] Bp. Hall.
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Oppugner
Op*pugn"er (?), n. One who opposes or attacks; that which opposes. Selden.
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Opsimathy
Op*sim"a*thy (?), n. [Gr. &unr_;.] Education late in life. [R.] Hales.
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Opsiometer
Op`si*om"e*ter (?), n. [Gr. &unr_; sight + -meter: cf. F. opsiomètre.] An instrument for measuring the limits of distinct vision in different individuals, and thus determiming the proper focal length of a lens for correcting imperfect sight. Brande & C.
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Opsonation
Op`so*na"tion (?), n. [L. opsonatio.] A catering; a buying of provisions. [Obs.] Bailey.
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Optable
Op"ta*ble (?), a. [L. optabilis.] That may be chosen; desirable. [Obs.] Cockeram.
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Optate
Op"tate (?), v. i. [L. optatus, p. p. of optare.] To choose; to wish for; to desire. [Obs.] Cotgrave.
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Optation
Op*ta"tion (?), n. [L. optatio. See Option.] The act of optating; a wish. [Obs.] Sir T. Browne.
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Optative
Op"ta*tive (?), a. [L. optativus: cf. F. optatif.] Expressing desire or wish. Fuller.
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Optative mood (Gram.), that mood or form of a verb, as in Greek, Sanskrit, etc., in which a wish or desire is expressed.
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Optative
Op"ta*tive, n. [Cf. F. optatif.] 1. Something to be desired. [R.] Bacon.
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2. (Gram.) The optative mood; also, a verb in the optative mood.
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Optatively
Op"ta*tive*ly, adv. In an optative manner; with the expression of desire. [R.]
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God blesseth man imperatively, and man blesseth God optatively. Bp. Hall.
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Optic
Op"tic (&obreve_;p"t&ibreve_;k), n. [From Optic, a.] 1. The organ of sight; an eye.
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The difference is as great between
The optics seeing, as the object seen.
Pope.
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2. An eyeglass. [Obs.] Herbert.
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Optical
Optic
{ Op"tic (&obreve_;p"t&ibreve_;k), Op"tic*al (&obreve_;p"t&ibreve_;*k&aitalic_;l), } a. [F. optique, Gr. 'optiko`s; akin to 'o`psis sight, 'o`pwpa I have seen, 'o`psomai I shall see, and to 'o`sse the two eyes, 'o`ps face, L. oculus eye. See Ocular, Eye, and cf. Canopy, Ophthalmia.] 1. Of, pertaining to, or using vision or sight; as, optical illusions. [wns=2]
Syn. -- ocular, optic, visual.
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The moon, whose orb
Through optic glass the Tuscan artist views.
Milton.
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2. Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina; the optic (or optical) axis of the eye. See Illust. of Brain, and Eye. [wns=3]
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3. Relating to the science of optics or to devices designed to assist vision; as, optical works; optical equipment. [wns=1]
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Optic angle (Opt.), the angle included between the optic axes of the two eyes when directed to the same point; -- sometimes called binocular parallax. -- Optic axis. (Opt.) (a) A line drawn through the center of the eye perpendicular to its anterior and posterior surfaces. In a normal eye it is in the direction of the optic axis that objects are most distinctly seen. (b) The line in a doubly refracting crystal, in the direction of which no double refraction occurs. A uniaxial crystal has one such line, a biaxial crystal has two. -- Optical circle (Opt.), a graduated circle used for the measurement of angles in optical experiments. -- Optical square, a surveyor's instrument with reflectors for laying off right angles.
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optical activity
optical activity n. (Chem.) the ability of a chemical compound to rotate the plane of plane-polarized light. This is found only in chemicals whose molecular structure does not have a plane of symmetry, and is common in biochemical compounds. -- optically active adj.
[PJC]

optical cable
optical cable n. (Communications) a cable containing multiple optical fibers.
[PJC]

optical fiber
optical fiber n. (Communications) A thin fiber of very pure glass used to carry signals transmitted by means of light. It has much greater information-carrying capacity than a copper wire, and in the 1990's became a dominant means of transmitting telephone communications over long distances.
[PJC]

Optically
Op"tic*al*ly, adv. 1. By optics or sight.
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2. With reference to optics.
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Optically active, Optically inactive (Chem. Physics), terms used of certain isomeric substances which, while identical with each other in other respects, differ in this, viz., that they do or do not produce right-handed or left-handed circular polarization of light. See optical activity. -- Optically positive, Optically negative. See under Refraction.
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Optician
Op*ti"cian (?), n. [Cf. F. opticien. See Optic, a.] 1. One skilled in optics. [R.] A. Smith.
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2. One who deals in optical glasses and instruments.
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Optics
Op"tics (?), n. [Cf. F. optique, L. optice, Gr. &unr_; (sc. &unr_;). See Optic.] That branch of physical science which treats of the nature and properties of light, the laws of its modification by opaque and transparent bodies, and the phenomena of vision.
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Optigraph
Op"ti*graph (?), n. [Optic + -graph: cf. F. opticographe. See Optic, a. ] A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes, by means of a pencil at the eye end which leaves the delineation on paper.
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Optimacy
Op"ti*ma*cy (?), n. [Cf. F. optimatie. See Optimate.] 1. Government by the nobility. [R.] Howell.
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2. Collectively, the nobility. [R.]
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optimal
op"ti*mal (?), a. Best possible; most desirable; optimum; as, the optimal concentration of a drug.
[PJC]

Optimate
Op"ti*mate (?), a. [L. optimas, -atis, adj., optimates, n. pl., the adherents of the best men, the aristocrats, fr. optimus the best.] Of or pertaining to the nobility or aristocracy. [R.] -- n. A nobleman or aristocrat; a chief man in a state or city. [R.] Chapman.
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Optimates
Op`ti*ma"tes (?), n. pl. [L. See Optimate.] The nobility or aristocracy of ancient Rome, as opposed to the populares.
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Optime
Op"ti*me (?), n. [L., adv. fr. optimus the best.] One of those who stand in the second rank of honors, immediately after the wranglers, in the University of Cambridge, England. They are divided into senior and junior optimes.
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optimise
op"ti*mise` (&obreve_;p"t&ibreve_;*mīz`) v. t. Same as optimize. [Chiefly Brit.]
[PJC]

Optimism
Op"ti*mism (?), n. [L. optimus the best; akin to optio choice: cf. F. optimisme. See Option.]
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1. (Metaph.) The opinion or doctrine that everything in nature, being the work of God, is ordered for the best, or that the ordering of things in the universe is such as to produce the highest good.
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2. A habitual tendency or a present disposition to take the most hopeful view of future events, and to expect a favorable outcome even when unfavorable outcomes are possible; -- opposed to pessimism.
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Optimist
Op"ti*mist (?), n. [Cf. F. optimiste.]
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1. (Metaph.) One who holds the opinion that all events are ordered for the best.
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2. One who looks on the bright side of things, or takes hopeful views; one who experiences optimism{2}; -- opposed to pessimist.
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Optimistic
Op`ti*mis"tic (?), a. 1. (Metaph.) Of or pertaining to optimism; tending, or conforming, to the opinion that all events are ordered for the best.
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2. Hopeful; sanguine; as, an optimistic view.
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optimize
op"ti*mize` (&obreve_;p"t&ibreve_;*mīz`) v. t. [imp. & p. p. optimized (&obreve_;p"t&ibreve_;*mīzd`); p. pr. & vb. n. optimizing (&obreve_;p"t&ibreve_;*mī`z&ibreve_;ng).] 1. To make as useful, effective, or functional as possible; as, to optimize the speed of a computer program.
Syn. -- optimise.
[WordNet 1.5]

2. To get the most out of; to use to the best effect; to exploit fully; as, to optimize one's return on investment.
Syn. -- make optimal, optimise.
[WordNet 1.5]

Optimity
Op*tim"i*ty (?), n. [L. optimitas, fr. optimus the best.] The state of being best. [R.] Bailey.
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optimum
optimum adj. Best possible or most desirable; -- usually under a restriction expressed or implied; as, an optimum return on capital; optimum concentration of a drug; an optimum result.
Syn. -- optimal.
[WordNet 1.5]

optimum
optimum n. The most favorable condition, greatest degree, or largest amount possible under given circumstances.
[WordNet 1.5]

Option
Op"tion (?), n. [L. optio; akin to optare to choose, wish, optimus best, and perh. to E. apt: cf. F. option.] 1. The power of choosing; the right of choice or election; an alternative.
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There is an option left to the United States of America, whether they will be respectable and prosperous, or contemptible and miserable, as a nation. Washington.
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2. The exercise of the power of choice; choice.
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Transplantation must proceed from the option of the people, else it sounds like an exile. Bacon.
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3. A wishing; a wish. [Obs.] Bp. Hall.
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4. (Ch. of Eng.) A right formerly belonging to an archbishop to select any one dignity or benefice in the gift of a suffragan bishop consecrated or confirmed by him, for bestowal by himself when next vacant; -- annulled by Parliament in 1845.
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5. (Stock Exchange) A stipulated privilege, given to a party in a time contract, of demanding its fulfillment on any day within a specified limit; also, the contract giving that privelege; as, an option to buy a stock at a given price; to exercise an option.
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&hand_; A person owning a stock may sell to another person an option or right to buy that stock at some specified price within a specified period of time, and in return will get a premium in consideration for giving the option. If the option price (the strike price) is above the market value for the entire period in which the option is valid, the option is typically not exercised, and expires with no need on the part of the stock owner to transfer the actual stock itself. If however the stock price rises above the option price, the holder of the option may exercise the option, and buy the stock at the specificed price, and may in turn resell the stock at the current market value, perhaps making a net profit on the transaction. The original holder of the stock will receive, in addition to the price at which the stock is sold, the price of the option, and will generally receive more money than if the stock itself were sold at the time that the option was sold. The actual profits for the transaction will depend on the fees that brokers charge for conducting the sales of options and stocks.
[PJC]

Buyer's option, an option allowed to one who contracts to buy stocks at a certain future date and at a certain price, to demand the delivery of the stock (giving one day's notice) at any previous time at the market price. -- Seller's option, an option allowed to one who contracts to deliver stock art a certain price on a certain future date, to deliver it (giving one day's notice) at any previous time at the market price. Such options are privileges for which a consideration is paid. -- Local option. See under Local.
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Syn. -- Choice; preference; selection. -- Option, Choice. Choice is an act of choosing; option often means liberty to choose, and implies freedom from constraint in the act of choosing.
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Optional
Op"tion*al (?), a. Involving an option; depending on the exercise of an option; left to one's discretion or choice; allowed but not compulsory; as, optional studies; it is optional with you to go or stay. -- n. See Elective, n.
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If to the former the movement was not optional, it was the same that the latter chose when it was optional. Palfrey.
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Original writs are either optional or peremptory. Blackstone.
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Optionally
Op"tion*al*ly, adv. In an optional manner.
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optionee
optionee n. [option + -ee] 1. (Finance) A person who holds an option to buy or sell a financial instrument. See option.
Syn. -- option holder.
[PJC]

Optocoelia
Optocoele
{ Op"to*coele (?), ‖Op`to*coe"li*a (?), } n. [NL. optocoelia, fr. Gr. &unr_; optic + koi^los a hollow.] (Anat.) The cavity of one of the optic lobes of the brain in many animals. B. G. Wilder.
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Optogram
Op"to*gram (?), n. [Optic + -gram: cf. F. optogramme.] (Physiol.) An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography.
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Optography
Op*tog"ra*phy (?), n. [Optic + -graphy.] (Physiol.) The production of an optogram on the retina by the photochemical action of light on the visual purple; the fixation of an image in the eye. The object so photographed shows white on a purple or red background. See Visual purple, under Visual.
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Optometer
Op*tom"e*ter (?), n. [Optic + -meter.] (Physiol.) An instrument for measuring the distance of distinct vision, mainly for the selection of eveglasses.
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Optometrist
Op*tom"e*trist (?), n. One who is skilled in or practices optometry, especially one who examines the eyes for defects in vision and prescribes the proper lenses to correct any defects discovered.
[Webster 1913 Suppl. +PJC]

Optometry
Op*tom"e*try (?), n. 1. (Med.) Measurement of the range of vision, esp. by means of the optometer.
[Webster 1913 Suppl.]

2. As defined (with minor variations) in the statutes of various States of the United States: (a) “The employment of subjective and objective mechanical means to determine the accomodative and refractive states of the eye and the scope of its function in general.” (b) “The employment of any means, other than the use of drugs, for the measurement of the powers of vision and adaptation of lenses for the aid thereof.”
[Webster 1913 Suppl.]

Opulence
Op"u*lence (?), n. [L. opulentia: cf. F. opulence. See Opulent.] Wealth; riches; affluence. Swift
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Opulency
Op"u*len*cy (?), n. See Opulence. Shak.
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Opulent
Op"u*lent (?), a. [L. opulens, opulentus, fr. ops, opis, power, wealth, riches, perh. akin to E. apt: cf. F. opulent. Cf. Copious, Couple, Office.] Having a large estate or property; wealthy; rich; affluent; as, an opulent city; an opulent citizen. -- Op"u*lent*ly, adv.
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I will piece
Her opulent throne with kingdoms.
Shak.
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Opuntia
O*pun"ti*a (?), prop. n. [NL.] (Bot.) A genus of cactaceous plants; the prickly pear, or Indian fig.
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Opuntiales
Opuntiales prop. n. An order of plants coextensive with the family Cactaceae, comprising the cactuses.
Syn. -- order Opuntiales.
[WordNet 1.5]

Opus
O"pus (?), n.; pl. Opera (#). [L. See Opera.] A work; specif. (Mus.), a musical composition.
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&hand_; Each composition, or set of pieces, as the composer may choose, is called an opus, and they are numbered in the order of their issue. (Often abbrev. to op.)
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Opus incertum. [L.] (Arch.) See under Incertum.
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Opuscule
Opuscle
{ O*pus"cle (&ouptack_;*pŭs"'l), O*pus"cule (&ouptack_;*pŭs"k&uuptack_;l), } n. [L. opusculum, dim. of opus work: cf. F. opuscule.] A small or petty work.
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Opusculum
O*pus"cu*lum (&ouptack_;*pŭs"k&uuptack_;*lŭm), n.; pl. Opuscula (#). [L.] An opuscule. Smart.
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Opye
O"pye (?), n. Opium. [Obs.] Chaucer.
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Oquassa
O*quas"sa (?), n. (Zool.) A small, handsome trout (Salvelinus oquassa), found in some of the lakes in Maine; -- called also blueback trout.
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-or
-or suff. [L. -or: cf. OF. -or, -ur, -our, F. -eur.] 1. A noun suffix denoting an act; a state or quality; as in error, fervor, pallor, candor, etc.
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2. A noun suffix denoting an agent or doer; as in auditor, one who hears; donor, one who gives; obligor, elevator. It is correlative to -ee. In general -or is appended to words of Latin, and -er to those of English, origin. See -er.
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Or
Or (ôr), conj. [OE. or, outher, other, auther, either, or, AS. āwðer, contr. from āhwaeðer; ā aye + hwaeðer whether. See Aye, and Whether, and cf. Either.] A particle that marks an alternative; as, you may read or may write, -- that is, you may do one of the things at your pleasure, but not both. It corresponds to either. You may ride either to London or to Windsor. It often connects a series of words or propositions, presenting a choice of either; as, he may study law, or medicine, or divinity, or he may enter into trade.
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If man's convenience, health,
Or safety interfere, his rights and claims
Are paramount.
Cowper.
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&hand_; Or may be used to join as alternatives terms expressing unlike things or ideas (as, is the orange sour or sweet?), or different terms expressing the same thing or idea; as, this is a sphere, or globe.
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&hand_; Or sometimes begins a sentence. In this case it expresses an alternative or subjoins a clause differing from the foregoing. “Or what man is there of you, who, if his son shall ask him for a loaf, will give him a stone?” Matt. vii. 9 (Rev. Ver.).
[1913 Webster] Or for either is archaic or poetic.
[1913 Webster] Maugre thine heed, thou must for indigence
Or steal, or beg, or borrow thy dispence.
Chaucer.

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Or
Or, prep. & adv. [AS. &unr_;r ere, before. √204. See Ere, prep. & adv.] Ere; before; sooner than. [Obs.]
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But natheless, while I have time and space,
Or that I forther in this tale pace.
Chaucer.
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Or ever, Or ere. See under Ever, and Ere.
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Or
Or, n. [F., fr. L. aurum gold. Cf. Aureate.] (Her.) Yellow or gold color, -- represented in drawing or engraving by small dots.
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Ora
O"ra (?), n. [AS. See 2d Ore.] A money of account among the Anglo-Saxons, valued, in the Domesday Book, at twenty pence sterling.
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Orabassu
O`ra*bas"su (?), n. (Zool.) A South American monkey of the genus Callithrix, esp. Callithrix Moloch.
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Orache
Orach
{ Or"ach, Or"ache} (?), n. [F. arroche, corrupted fr. L. atriplex, Gr. &unr_;. Cf. Arrach.] (Bot.) A genus (Atriplex) of herbs or low shrubs of the Goosefoot family, most of them with a mealy surface.
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Garden orache, a plant (Atriplex hortensis), often used as a pot herb; -- also called mountain spinach.
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Oracle
Or"a*cle (?), n. [F., fr. L. oraculum, fr. orare to speak, utter, pray, fr. os, oris, mouth. See Oral.]
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1. The answer of a god, or some person reputed to be a god, to an inquiry respecting some affair or future event, as the success of an enterprise or battle.
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Whatso'er she saith, for oracles must stand. Drayton.
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2. Hence: The deity who was supposed to give the answer; also, the place where it was given.
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The oracles are dumb;
No voice or hideous hum
Runs through the arched roof in words deceiving.
Milton.
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3. The communications, revelations, or messages delivered by God to the prophets; also, the entire sacred Scriptures -- usually in the plural.
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The first principles of the oracles of God. Heb. v. 12.
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4. (Jewish Antiq.) The sanctuary, or Most Holy place in the temple; also, the temple itself. 1 Kings vi. 19.
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Siloa's brook, that flow'd
Fast by the oracle of God.
Milton.
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5. One who communicates an oracle{1} or divine command; an angel; a prophet.
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God hath now sent his living oracle
Into the world to teach his final will.
Milton.
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6. Any person reputed uncommonly wise; one whose decisions are regarded as of great authority; as, a literary oracle.Oracles of mode.” Tennyson.
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The country rectors . . . thought him an oracle on points of learning. Macaulay.
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7. A wise pronouncement or decision considered as of great authority.
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Oracle
Or"a*cle, v. i. [imp. & p. p. Oracled (?); p. pr. & vb. n. Oracling (?).] To utter oracles. [Obs.]
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Oracular
O*rac"u*lar (?), a. [L. oracularius. See Oracle.] 1. Of or pertaining to an oracle; uttering oracles; forecasting the future; as, an oracular tongue.
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2. Resembling an oracle in some way, as in solemnity, wisdom, authority, obscurity, ambiguity, dogmatism.
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They have something venerable and oracular in that unadorned gravity and shortness in the expression. Pope.
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-- O*rac"u*lar*ly, adv. -- O*rac"u*lar*ness, n.
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Oraculous
O*rac"u*lous (?), a. Oracular; of the nature of an oracle. [R.] “Equivocations, or oraculous speeches.” Bacon. “The oraculous seer.” Pope. -- O*rac"u*lous*ly, adv. -- O*rac"u*lous*ness, n.
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Oragious
O*ra"gious (?), a. [F. orageux.] Stormy. [R.]
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Oraison
Or"ai*son (?), n. See Orison. [Obs.] Shak.
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Oral
O"ral (?), a. [L. os, oris, the mouth, akin to Skr. ās. Cf. Adore, Orison, Usher.] 1. Uttered by the mouth, or in words; spoken, not written; verbal; as, oral traditions; oral testimony; oral law.
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2. Of or pertaining to the mouth; surrounding or lining the mouth; as, the oral cavity; oral cilia or cirri.
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Orally
O"ral*ly, adv. 1. In an oral manner. Tillotson.
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2. By, with, or in, the mouth; as, to receive the sacrament orally. [Obs.] Usher.
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oral surgery
o"ral sur"ge*ry (?), n. (Med.) Surgery performed within the mouth cavity, especially that performed around the gums and teeth as an expedient for the purpose of preservation or replacement of teeth.
[PJC]

Orang
O*rang" (?), n. (Zool.) See Orang-outang.
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Orange
Or"ange (&obreve_;r"&ebreve_;nj), n. [F.; cf. It. arancia, arancio, LL. arangia, Sp. naranjia, Pg. laranja; all fr. Ar. nāranj, Per. nāranj, nārang; cf. Skr. nāranga orange tree. The o- in F. orange is due to confusion with or gold, L. aurum, because the orange resembles gold in color.]
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1. The fruit of a tree of the genus Citrus (Citrus Aurantium). It is usually round, and consists of pulpy carpels, commonly ten in number, inclosed in a leathery rind, which is easily separable, and is reddish yellow when ripe.
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&hand_; There are numerous varieties of oranges; as, the bitter orange, which is supposed to be the original stock; the navel orange, which has the rudiment of a second orange imbedded in the top of the fruit; the blood orange, with a reddish juice; and the horned orange, in which the carpels are partly separated.
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2. (Bot.) The tree that bears oranges; the orange tree.
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3. The color of an orange; reddish yellow.
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Mandarin orange. See Mandarin. -- Mock orange (Bot.), any species of shrubs of the genus Philadelphus, which have whitish and often fragrant blossoms. -- Native orange, or Orange thorn (Bot.), an Australian shrub (Citriobatus parviflorus); also, its edible yellow berries. -- Orange bird (Zool.), a tanager of Jamaica (Tanagra zena); -- so called from its bright orange breast. -- Orange cowry (Zool.), a large, handsome cowry (Cypraea aurantia), highly valued by collectors of shells on account of its rarity. -- Orange grass (Bot.), an inconspicuous annual American plant (Hypericum Sarothra), having minute, deep yellow flowers. -- Orange oil (Chem.), an oily, terpenelike substance obtained from orange rind, and distinct from neroli oil, which is obtained from the flowers. -- Orange pekoe, a kind of black tea. -- Orange pippin, an orange-colored apple with acid flavor. -- Quito orange, the orangelike fruit of a shrubby species of nightshade (Solanum Quitoense), native in Quito. -- Orange scale (Zool.) any species of scale insects which infests orange trees; especially, the purple scale (Mytilaspis citricola), the long scale (Mytilaspis Gloveri), and the red scale (Aspidiotus Aurantii).
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orange
or"ange, a. Of or pertaining to an orange; of the color of an orange; reddish yellow; as, an orange ribbon.
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Orangeade
Or`ange*ade" (?), n. [F., fr. orange.] A drink made of orange juice and water, corresponding to lemonade; orange sherbet.
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Orangeat
Or`an*geat" (?), n. [F., fr. orange.] Candied orange peel; also, orangeade.
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Orangeism
Or"ange*ism (?), n. Attachment to the principles of the society of Orangemen; the tenets or practices of the Orangemen.
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Orangeman
Or"ange*man (?), n.; pl. -men (&unr_;). One of a secret society, organized in the north of Ireland in 1795, the professed objects of which are the defense of the reigning sovereign of Great Britain, the support of the Protestant religion, the maintenance of the laws of the kingdom, etc.; -- so called in honor of William, Prince of Orange, who became William III. of England.
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Orangeroot
Or"ange*root` (?), n. (Bot.) An American ranunculaceous plant (Hidrastis Canadensis), having a yellow tuberous root; -- also called yellowroot, golden seal, etc.
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Orangery
Or"an*ger*y (?), n. [F. orangerie, fr. orange. See Orange.] A place for raising oranges; a plantation of orange trees.
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Orangetawny
Or"ange*taw`ny (?), a. & n. Deep orange-yellow; dark yellow. Shak.
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Orangite
Or"an*gite (?), (Min.) An orange-yellow variety of the mineral thorite, found in Norway.
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Orang-utan
Orang-outang
O*rang"-ou*tang`, O*rang"-u*tan` (?), n. [Malayan ōrang ūtan, i. e., man of the woods; ōrang man + ūtan a forest, wood, wild, savage.] (Zool.) An arboreal anthropoid ape (Pongo pygmaeus, formerly Simia satyrus), which inhabits Borneo and Sumatra. Often called simply orang. It is now an endangered species. [Written also orangutan, orangutang, orang-utan, ourang-utang, and oran-utan.]
[1913 Webster +PJC]

&hand_; It is over four feet high, when full grown, and has very long arms, which reach nearly or quite to the ground when the body is erect. Its color is reddish brown. In structure, it closely resembles man in many respects.
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Orarian
O*ra"ri*an (?), a. [L. orarius, fr. ora coast.] Of or pertaining to a coast.
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Oration
O*ra"tion (?), n.[L. oratio, fr. orare to speak, utter, pray. See Oral, Orison.] An elaborate discourse, delivered in public, treating an important subject in a formal and dignified manner; especially, a discourse having reference to some special occasion, as a funeral, an anniversary, a celebration, or the like; -- distinguished from an argument in court, a popular harangue, a sermon, a lecture, etc.; as, Webster's oration at Bunker Hill.
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The lord archbishop . . . made a long oration. Bacon.
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Syn. -- Address; speech. See Harangue.
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Oration
O*ra"tion, v. i. To deliver an oration. Donne.
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Orator
Or"a*tor (?), n. [L., fr. orare to speak, utter. See Oration.] 1. A public speaker; one who delivers an oration; especially, one distinguished for his skill and power as a public speaker; one who is eloquent.
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I am no orator, as Brutus is. Shak.
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Some orator renowned
In Athens or free Rome.
Milton.
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2. (Law) (a) In equity proceedings, one who prays for relief; a petitioner. (b) A plaintiff, or complainant, in a bill in chancery. Burrill.
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3. (Eng. Universities) An officer who is the voice of the university upon all public occasions, who writes, reads, and records all letters of a public nature, presents, with an appropriate address, those persons on whom honorary degrees are to be conferred, and performs other like duties; -- called also public orator.
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Oratorial
Or`a*to"ri*al (?), a. Oratorical. [R.] Swift. --Or`a*to"ri*al*ly, adv.
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Oratorian
Or`a*to"ri*an (?), a. Oratorical. [Obs.] R. North.
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Oratorian
Or`a*to"ri*an, n. [Cf. F. oratorien.] (R. C. Ch.) See Fathers of the Oratory, under Oratory.
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Oratorical
Or`a*tor"ic*al (?), a. Of or pertaining to an orator or to oratory; characterized by oratory; rhetorical; becoming to an orator; as, an oratorical triumph; an oratorical essay. -- Or`a*tor"ic*al*ly, adv.
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Oratorio
Or`a*to"ri*o (?), n. [It., fr. L. oratorius belonging to praying. See Orator, and cf. Oratory.]
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1. (Mus.) A more or less dramatic text or poem, founded on some Scripture nerrative, or great divine event, elaborately set to music, in recitative, arias, grand choruses, etc., to be sung with an orchestral accompaniment, but without action, scenery, or costume, although the oratorio grew out of the Mysteries and the Miracle and Passion plays, which were acted.
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&hand_; There are instances of secular and mythological subjects treated in the form of the oratorios, and called oratorios by their composers; as Haydn's “Seasons,” Handel's “Semele,” etc.
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2. Performance or rendering of such a composition.
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Oratorious
Or`a*to"ri*ous (?), a. [LL. oratorius.] Oratorical. [Obs.] Jer. Taylor. -- Or`a*to"ri*ous*ly, adv. [Obs.]
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Oratorize
Or"a*tor*ize (?), v. i. To play the orator. [Jocose or derisive] Dickens.
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Oratory
Or"a*to*ry (?), n.; pl. Oratories (#). [OE. oratorie, fr. L. oratorium, fr. oratorius of praying, of an orator: cf. F. oratoire. See Orator, Oral, and cf. Oratorio.] A place of orisons, or prayer; especially, a chapel or small room set apart for private devotions.
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An oratory [temple] . . . in worship of Dian. Chaucer.
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Do not omit thy prayers for want of a good oratory, or place to pray in. Jer. Taylor.
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Fathers of the Oratory (R. C. Ch.), a society of priests founded by St. Philip Neri, living in community, and not bound by a special vow. The members are called also oratorians.
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Oratory
Or"a*to*ry, n. [L. oratoria (sc. ars) the oratorical art.] The art of an orator; the art of public speaking in an eloquent or effective manner; the exercise of rhetorical skill in oral discourse; eloquence. “The oratory of Greece and Rome.” Milton.
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When a world of men
Could not prevail with all their oratory.
Shak.
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Oratress
Or"a*tress (?), n. A woman who makes public addresses. Warner.
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Oratrix
Or"a*trix (?), n. [L.] A woman plaintiff, or complainant, in equity pleading. Burrill.
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Orb
Orb (ôrb), n. [OF. orb blind, fr. L. orbus destitute.] (Arch.) A blank window or panel. [Obs.] Oxf. Gloss.
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Orb
Orb, n. [F. orbe, fr. L. orbis circle, orb. Cf. Orbit.]
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1. A spherical body; a globe; especially, one of the celestial spheres; a sun, planet, or star.
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In the small orb of one particular tear. Shak.
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Whether the prime orb,
Incredible how swift, had thither rolled.
Milton.
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2. One of the azure transparent spheres conceived by the ancients to be inclosed one within another, and to carry the heavenly bodies in their revolutions.
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3. A circle; esp., a circle, or nearly circular orbit, described by the revolution of a heavenly body; an orbit.
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The schoolmen were like astronomers, which did feign eccentrics, and epicycles, and such engines of orbs. Bacon.
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You seem to me as Dian in her orb. Shak.
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In orbs
Of circuit inexpressible they stood,
Orb within orb.
Milton.
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4. A period of time marked off by the revolution of a heavenly body. [R.] Milton.
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5. The eye, as luminous and spherical. [Poetic]
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A drop serene hath quenched their orbs. Milton.
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6. A revolving circular body; a wheel. [Poetic]
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The orbs
Of his fierce chariot rolled.
Milton.
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7. A sphere of action or influence. Wordsworth.
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But in our orbs we'll live so round and safe. Shak
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8. Same as Mound, a ball or globe. See 1st Mound.
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9. (Mil.) A body of soldiers drawn up in a circle, as for defense, esp. infantry to repel cavalry.
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Syn. -- Globe; ball; sphere. See Globe.
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Orb
Orb (ôrb), v. t. [imp. & p. p. Orbed (ôrbd); p. pr. & vb. n. Orbing.] 1. To form into an orb or circle. [Poetic] Milton. Lowell.
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2. To encircle; to surround; to inclose. [Poetic]
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The wheels were orbed with gold. Addison.
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Orb
Orb, v. i. To become round like an orb. [Poetic]
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And orb into the perfect star. Tennyson.
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Orbate
Or"bate (?), a. [L. orbatus, p. p. of orbare to bereave, fr. orbus bereaved of parents or children. See Orphan.] Bereaved; fatherless; childless. [Obs.]
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Orbation
Or*ba"tion (?), n. [L. orbatio.] The state of being orbate, or deprived of parents or children; privation, in general; bereavement. [Obs.] Bp. Hall.
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Orbed
Orbed (?), a. Having the form of an orb; round.
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The orbèd eyelids are let down. Trench.
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Orbical
Orbic
{ Or"bic (?), Or"bic*al (?), } a. [L. orbicus, or orbitus, fr. orbis orb.] Spherical; orbicular; orblike; circular. [R.] Bacon.
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Orbicle
Or"bi*cle (?), n. [L. orbiculus, dim. of orbis orb.] A small orb, or sphere. [Obs.] G. Fletcher.
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Orbicula
Or*bic"u*la (?), n. [NL. See Orbicle.] (Zool.) Same as Discina.
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Orbicular
Or*bic"u*lar (?), a. [L. orbicularis, fr. orbiculus, dim. of orbis orb: cf. F. orbiculaire.] Resembling or having the form of an orb; spherical; circular; orbiculate. -- Or*bic"u*lar*ly, adv. -- Or*bic"u*lar*ness, n.
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Orbicular as the disk of a planet. De Quincey.
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Orbiculate
Or*bic"u*late (?), n. That which is orbiculate; especially, a solid the vertical section of which is oval, and the horizontal section circular.
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Orbiculated
Orbiculate
{ Or*bic"u*late (?), Or*bic"u*la`ted (?), } a. [L. orbiculatus. See Orbicular.] Made, or being, in the form of an orb; having a circular, or nearly circular, or a spheroidal, outline.
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Orbiculate leaf (Bot.), a leaf whose outline is nearly circular.
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Orbiculation
Or*bic`u*la"tion (?), n. The state or quality of being orbiculate; orbicularness. Dr. H. More.
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Orbit
Or"bit (?), n. [L. orbita a track or rut made by a wheel, course, circuit, fr. orbis a circle: cf. F. orbite. See 2d Orb.] 1. (Astron.) The path described by a heavenly body in its periodical revolution around another body; as, the orbit of Jupiter, of the earth, of the moon.
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2. An orb or ball. [Rare & Improper]
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Roll the lucid orbit of an eye. Young.
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3. (Anat.) The cavity or socket of the skull in which the eye and its appendages are situated.
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4. (Zool.) The skin which surrounds the eye of a bird.
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Orbital
Or"bit*al (?), a. Of or pertaining to an orbit.Orbital revolution.” J. D. Forbes.
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Orbital index (Anat.), in the skull, the ratio of the vertical height to the transverse width of the orbit, which is taken as the standard, equal to 100.
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Orbitar
Or"bit*ar (?), a. [Cf. F. orbitaire.] Orbital. [R.] Dunglison.
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Orbitary
Or"bit*a*ry (?), a. Situated around the orbit; as, the orbitary feathers of a bird.
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Orbitelae
Or`bi*te"lae (?), n. pl. [NL., fr. L. orbis an orb + tela a web.] (Zool.) A division of spiders, including those that make geometrical webs, as the garden spider, or Epeira.
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Orbitolites
Or`bi*to*li"tes (?), prop. n. [NL. See Orbit, and -lite.] (Zool.) A genus of living Foraminifera, forming broad, thin, circular disks, containing numerous small chambers.
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Orbitonasal
Or`bi*to*na"sal (?), a. [Orbit + nasal.] (Anat.) Of or pertaining to the orbit and the nose; as, the orbitonasal, or ophthalmic, nerve.
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Orbitosphenoid
Or`bi*to*sphe"noid (?), a. [Orbit + sphenoid.] (Anat.) Of or pertaining to the sphenoid bone and the orbit, or to the orbitosphenoid bone. -- n. The orbitosphenoid bone, which is situated in the orbit on either side of the presphenoid. It generally forms a part of the sphenoid in the adult.
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Orbitosphenoidal
Or`bi*to*sphe*noid"al (?), a. (Anat.) Of or pertaining to the orbitosphenoid bone; orbitosphenoid.
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Orbituary
Or*bit"u*a*ry (?), a. Orbital. [R.]
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Orbity
Orbitude
{ Or"bi*tude (?), Or"bi*ty (?), } n. [L. orbitudo, orbitas, fr. orbus: cf. F. orbité. See Orbate.] Orbation. [Obs.] Bp. Hall.
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Orbulina
Or`bu*li"na (?), prop. n. [NL., dim. of L. orbis orb.] (Zool.) A genus of minute living Foraminifera having a globular shell.
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orb-weaver
orb weaver
orb" weav`er, orb"-weav`er (?), n. Any spider of the family Araneidae (called also Argiopidae) that spins a web with a pattern of lines spiraling outward from the center. They have eight similar eyes. The golden orb weaver, Mephila clavipes, is known for the remarkable dragline silk it produces for use as a frame for its web and as a line on which it can plummet down and nab prey. This silk has a high tensile strength and is stronger than the toughest current synthetic polymer (Kevlar).
[PJC]

Orby
Orb"y (?), a. [From 2d Orb.] Orblike; having the course of an orb; revolving. [Obs.]Orby hours.” Chapman.
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orc
orc (ôrk), n. [L. orca, a kind of whale: cf. F. orque.] 1. (Zool.) Any of several cetaceans, especialy the grampus (Grampus griseus) of the dolphin family. [Written also ork and orch.] Milton.
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An island salt and bare,
The haunt of seals, and orcs, and sea-mews' clang.
Milton (Par. Lost xi. 835).

2. (Mythology) A mythical monster of varying descriptions; an ogre.
[PJC]

Goblins, hobgoblins, and orcs of the worst description. J. J. Tolkien (The Hobbit)

3. The orca.
[PJC]

Orca
Or"ca (ôr"k&adot_;), prop. n. The killer whale (Orcinus orca).
[PJC]

Orcadian
Or*ca"di*an (?), a. [L. Orcades the Orkney Islands.] Of or pertaining to the Orkney Islands.
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Orcein
Or"ce*in (?), n. (Chem.) A reddish brown amorphous dyestuff, C7H7NO3, obtained from orcin, and forming the essential coloring matter of cudbear and archil. It is closely related to litmus.
[1913 Webster]

Orchal
Or"chal (?), n. See Archil.
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Orchanet
Or"cha*net (?), n. [F. orcanète.] (Bot.) Same as Alkanet, 2. Ainsworth.
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Orchard
Or"chard (?), n. [AS. ortgeard, wyrtgeard, lit., wortyard, i. e., a yard for herbs; wyrt herb + geard yard. See Wort, Yard inclosure.] 1. A garden. [Obs.]
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2. An inclosure containing fruit trees; also, the fruit trees, collectively; -- used especially of apples, peaches, pears, cherries, plums, or the like, less frequently of nutbearing trees and of sugar maple trees.
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Orchard grass (Bot.), a tall coarse grass (Dactylis glomerata), introduced into the United States from Europe. It grows usually in shady places, and is of value for forage and hay. -- Orchard house (Hort.), a glazed structure in which fruit trees are reared in pots. -- Orchard oriole (Zool.), a bright-colored American oriole (Icterus spurius), which frequents orchards. It is smaller and darker thah the Baltimore oriole.
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Orcharding
Or"chard*ing (?), n. 1. The cultivation of orchards.
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2. Orchards, in general.
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Orchardist
Or"chard*ist, n. One who cultivates an orchard.
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Orchel
Or"chel (?), n. Archil.
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Orchesography
Or`che*sog"ra*phy (?), n. [Gr. &unr_; dance + -graphy.] A treatise upon dancing. [R.]
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Orchester
Or"ches*ter (?), n. See Orchestra.
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Orchestian
Or*ches"tian (?), n. [From Gr. &unr_; a dancer. See Orchestra.] (Zool.) Any species of amphipod crustacean of the genus Orchestia, or family Orchestidae. See Beach flea, under Beach.
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Orchestra
Or"ches*tra (?), n. [L. orchestra, Gr. &unr_;, orig., the place for the chorus of dancers, from &unr_; to dance: cf. F. orchestre.] 1. The space in a theater between the stage and the audience; -- originally appropriated by the Greeks to the chorus and its evolutions, afterward by the Romans to persons of distinction, and by the moderns to a band of instrumental musicians. Now commonly called orchestra pit, to distinguish it from the section of the main floor occupied by spectators.
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2. The space in the main floor of a theater in which the audience sits; also, the forward spectator section of the main floor, in distinction from the parterre, which is the rear section of the main floor.
[PJC]

3. The place in any public hall appropriated to a band of instrumental musicians.
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4. (Mus.) (a) Loosely: A band of instrumental musicians performing in a theater, concert hall, or other place of public amusement. (b) Strictly: A band suitable for the performance of symphonies, overtures, etc., as well as for the accompaniment of operas, oratorios, cantatas, masses, and the like, or of vocal and instrumental solos. (c) A band composed, for the largest part, of players of the various viol instruments, many of each kind, together with a proper complement of wind instruments of wood and brass; -- as distinguished from a military or street band of players on wind instruments, and from an assemblage of solo players for the rendering of concerted pieces, such as septets, octets, and the like.
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5. (Mus.) The instruments employed by a full band, collectively; as, an orchestra of forty stringed instruments, with proper complement of wind instruments.
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Orchestral
Or"ches*tral (?), a. Of or pertaining to an orchestra; suitable for, or performed in or by, an orchestra.
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orchestrate
orchestrate v. t. 1. to write an orchestra score for; -- of a musical composition.
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2. To be the chief coordinator of (an activity requiring action by more than one person); to organize and coordinate.
Syn. -- mastermind, engineer, direct, organize.
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orchestrated
orchestrated adj. 1. Arranged for performance by an orchestra; -- of a musical composition.
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2. Coordinated to achieve a maximal effect; -- of actions of a group.
[PJC]

Orchestration
Or`ches*tra"tion (?), n. (Mus.) The arrangement of music for an orchestra; orchestral treatment of a composition; -- called also instrumentation.
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Orchestre
Or"ches*tre (?), n. [F.] See Orchestra.
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Orchestric
Or*ches"tric (?), a. Orchestral.
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Orchestrion
Or*ches"tri*on (?), n. A large music box imitating a variety of orchestral instruments.
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Orchid
Or"chid (?), n. [See Orchis.] (Bot.) Any plant of the order Orchidaceae. See Orchidaceous.
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Orchidaceous
Or`chi*da"ceous (?), a. (Bot.) Pertaining to, or resembling, a natural order (Orchidaceae) of endogenous plants of which the genus Orchis is the type. They are mostly perennial herbs having the stamens and pistils united in a single column, and normally three petals and three sepals, all adherent to the ovary. The flowers are curiously shaped, often resembling insects, the odd or lower petal (called the lip) being unlike the others, and sometimes of a strange and unexpected appearance. About one hundred species occur in the United States, but several thousand in the tropics.
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&hand_; Over three hundred genera are recognized.
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Orchidales
Orchidales prop. n. An order of plants with irregular flowers having minute seeds, and including the families Orchidaceae and Burmanniaceae.
Syn. -- order Orchidales.
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Orchidean
Or*chid"e*an (?), a. (Bot.) Orchidaceous.
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Orchideous
Or*chid"e*ous (?), a. (Bot.) Same as Orchidaceous.
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Orchidologist
Or`chid*ol"o*gist (?), n. One versed in orchidology.
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Orchidology
Or`chid*ol"o*gy (?), n. [Gr. &unr_; the orchis + -logy.] The branch of botany which treats of orchids.
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Orchil
Or"chil (?), n. See Archil.
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Orchilla weed
Or*chil"la weed` (?). (Bot.) The lichen from which archil is obtained. See Archil.
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Orchis
Or"chis (?), prop. n.; pl. Orchises (#). [L., fr. Gr. &unr_; a testicle, the orchis; -- so called from its tubers.]
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1. (Bot.) A genus of endogenous plants growing in the North Temperate zone, and consisting of about eighty species. They are perennial herbs growing from a tuber (beside which is usually found the last year's tuber also), and are valued for their showy flowers. See Orchidaceous.
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2. (Bot.) Any plant of the same family with the orchis; an orchid.
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&hand_; The common names, such as bee orchis, fly orchis, butterfly orchis, etc., allude to the peculiar form of the flower.
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Orchitis
Or*chi"tis (?), n. [NL., fr. Gr. &unr_; a testicle + -itis.] (Med.) Inflammation of the testicles.
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Orchotomy
Or*chot"o*my (?), n. [Gr. &unr_; a testicle + te`mnein to cut.] (Surg.) The operation of cutting out or removing a testicle by the knife; castration.
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Orcin
Or"cin (?), n. [Etymology uncertain: cf. F. orcine.] (Chem.) A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens (Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein.
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Orcus
Orcus prop. n. The god of the underworld; counterpart of Greek Pluto.
Syn. -- Dis.
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Ord
Ord (ôrd), n. [AS. ord point.] An edge or point; also, a beginning. [ Obs. or Prov. Eng.] Chaucer.
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Ord and end, the beginning and end. Cf. Odds and ends, under Odds. [Obs. or Prov. Eng.] Chaucer. Halliwell.
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Ordain
Or*dain" (?), v. t. [imp. & p. p. Ordained (?); p. pr. & vb. n. Ordaining.] [OE. ordeinen, OF. ordener, F. ordonner, fr. L. ordinare, from ordo, ordinis, order. See Order, and cf. Ordinance.] 1. To set in order; to arrange according to rule; to regulate; to set; to establish. “Battle well ordained.” Spenser.
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The stake that shall be ordained on either side. Chaucer.
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2. To regulate, or establish, by appointment, decree, or law; to constitute; to decree; to appoint; to institute.
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Jeroboam ordained a feast in the eighth month. 1 Kings xii. 32.
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And doth the power that man adores ordain
Their doom ?
Byron.
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3. To set apart for an office; to appoint.
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Being ordained his special governor. Shak.
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4. (Eccl.) To invest with ministerial or sacerdotal functions; to introduce into the office of the Christian ministry, by the laying on of hands, or other forms; to set apart by the ceremony of ordination.
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Meletius was ordained by Arian bishops. Bp. Stillingfleet.
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Ordainable
Or*dain"a*ble (?), a. Capable of being ordained; worthy to be ordained or appointed. Bp. Hall.
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Ordainer
Or*dain"er (?), n. One who ordains.
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Ordainment
Or*dain"ment (?), n. Ordination. [R.] Burke.
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Ordal
Or"dal (?), n. Ordeal. [Obs.] Chaucer.
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Ordalian
Or*da"li*an (?), a. [LL. ordalium.] Of or pertaining to trial by ordeal. [Obs.] Bp. Hall.
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Ordeal
Or"de*al (ôr"d&euptack_;*&aitalic_;l), n. [AS. ordāl, ord&aemacr_;l, a judgment; akin to D. oordeel, G. urteil, urtheil; orig., what is dealt out, the prefix or- being akin to ā- compounded with verbs, G. er-, ur-, Goth. us-, orig. meaning, out. See Deal, v. & n., and cf. Arise, Ort.] 1. An ancient form of test to determine guilt or innocence, by appealing to a supernatural decision, -- once common in Europe, and still practiced in the East and by savage tribes.
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&hand_; In England ordeal by fire and ordeal by water were used, the former confined to persons of rank, the latter to the common people. The ordeal by fire was performed, either by handling red-hot iron, or by walking barefoot and blindfold over red-hot plowshares, laid at unequal distances. If the person escaped unhurt, he was adjudged innocent; otherwise he was condemned as guilty. The ordeal by water was performed, either by plunging the bare arm to the elbow in boiling water, an escape from injury being taken as proof of innocence, or by casting the accused person, bound hand and foot, into a river or pond, when if he floated it was an evidence of guilt, but if he sunk he was acquitted. It is probable that the proverbial phrase, to go through fire and water, denoting severe trial or danger, is derived from the ordeal. See Wager of battle, under Wager.
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2. Any severe trial, or test; a painful experience.
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Ordeal bean. (Bot.) See Calabar bean, under Calabar. -- Ordeal root (Bot.) the root of a species of Strychnos growing in West Africa, used, like the ordeal bean, in trials for witchcraft. -- Ordeal tree (Bot.), a poisonous tree of Madagascar (Tanghinia venenata syn. Cerbera venenata). Persons suspected of crime are forced to eat the seeds of the plumlike fruit, and criminals are put to death by being pricked with a lance dipped in the juice of the seeds.
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Ordeal
Or"de*al, a. Of or pertaining to trial by ordeal.
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Order
Or"der (?), n. [OE. ordre, F. ordre, fr. L. ordo, ordinis. Cf. Ordain, Ordinal.]
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1. Regular arrangement; any methodical or established succession or harmonious relation; method; system; as: (a) Of material things, like the books in a library. (b) Of intellectual notions or ideas, like the topics of a discource. (c) Of periods of time or occurrences, and the like.
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The side chambers were . . . thirty in order. Ezek. xli. 6.
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Bright-harnessed angels sit in order serviceable. Milton.
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Good order is the foundation of all good things. Burke.
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2. Right arrangement; a normal, correct, or fit condition; as, the house is in order; the machinery is out of order. Locke.
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3. The customary mode of procedure; established system, as in the conduct of debates or the transaction of business; usage; custom; fashion. Dantiel.
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And, pregnant with his grander thought,
Brought the old order into doubt.
Emerson.
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4. Conformity with law or decorum; freedom from disturbance; general tranquillity; public quiet; as, to preserve order in a community or an assembly.
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5. That which prescribes a method of procedure; a rule or regulation made by competent authority; as, the rules and orders of the senate.
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The church hath authority to establish that for an order at one time which at another time it may abolish. Hooker.
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6. A command; a mandate; a precept; a direction.
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Upon this new fright, an order was made by both houses for disarming all the papists in England. Clarendon.
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7. Hence: A commission to purchase, sell, or supply goods; a direction, in writing, to pay money, to furnish supplies, to admit to a building, a place of entertainment, or the like; as, orders for blankets are large.
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In those days were pit orders -- beshrew the uncomfortable manager who abolished them. Lamb.
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8. A number of things or persons arranged in a fixed or suitable place, or relative position; a rank; a row; a grade; especially, a rank or class in society; a group or division of men in the same social or other position; also, a distinct character, kind, or sort; as, the higher or lower orders of society; talent of a high order.
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They are in equal order to their several ends. Jer. Taylor.
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Various orders various ensigns bear. Granville.
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Which, to his order of mind, must have seemed little short of crime. Hawthorne.
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9. A body of persons having some common honorary distinction or rule of obligation; esp., a body of religious persons or aggregate of convents living under a common rule; as, the Order of the Bath; the Franciscan order.
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Find a barefoot brother out,
One of our order, to associate me.
Shak.
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The venerable order of the Knights Templars. Sir W. Scott.
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10. An ecclesiastical grade or rank, as of deacon, priest, or bishop; the office of the Christian ministry; -- often used in the plural; as, to take orders, or to take holy orders, that is, to enter some grade of the ministry.
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11. (Arch.) The disposition of a column and its component parts, and of the entablature resting upon it, in classical architecture; hence (as the column and entablature are the characteristic features of classical architecture) a style or manner of architectural designing.
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&hand_; The Greeks used three different orders, easy to distinguish, Doric, Ionic, and Corinthian. The Romans added the Tuscan, and changed the Doric so that it is hardly recognizable, and also used a modified Corinthian called Composite. The Renaissance writers on architecture recognized five orders as orthodox or classical, -- Doric (the Roman sort), Ionic, Tuscan, Corinthian, and Composite. See Illust. of Capital.
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12. (Nat. Hist.) An assemblage of genera having certain important characters in common; as, the Carnivora and Insectivora are orders of Mammalia.
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&hand_; The Linnaean artificial orders of plants rested mainly on identity in the numer of pistils, or agreement in some one character. Natural orders are groups of genera agreeing in the fundamental plan of their flowers and fruit. A natural order is usually (in botany) equivalent to a family, and may include several tribes.
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13. (Rhet.) The placing of words and members in a sentence in such a manner as to contribute to force and beauty or clearness of expression.
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14. (Math.) Rank; degree; thus, the order of a curve or surface is the same as the degree of its equation.
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Artificial order or Artificial system. See Artificial classification, under Artificial, and Note to def. 12 above. -- Close order (Mil.), the arrangement of the ranks with a distance of about half a pace between them; with a distance of about three yards the ranks are in open order. -- The four Orders, The Orders four, the four orders of mendicant friars. See Friar. Chaucer. -- General orders (Mil.), orders issued which concern the whole command, or the troops generally, in distinction from special orders. -- Holy orders. (a) (Eccl.) The different grades of the Christian ministry; ordination to the ministry. See def. 10 above. (b) (R. C. Ch.) A sacrament for the purpose of conferring a special grace on those ordained. -- In order to, for the purpose of; to the end; as means to.

The best knowledge is that which is of greatest use in order to our eternal happiness. Tillotson.

-- Minor orders (R. C. Ch.), orders beneath the diaconate in sacramental dignity, as acolyte, exorcist, reader, doorkeeper. -- Money order. See under Money. -- Natural order. (Bot.) See def. 12, Note. -- Order book. (a) A merchant's book in which orders are entered. (b) (Mil.) A book kept at headquarters, in which all orders are recorded for the information of officers and men. (c) A book in the House of Commons in which proposed orders must be entered. [Eng.] -- Order in Council, a royal order issued with and by the advice of the Privy Council. [Great Britain] -- Order of battle (Mil.), the particular disposition given to the troops of an army on the field of battle. -- Order of the day, in legislative bodies, the special business appointed for a specified day. -- Order of a differential equation (Math.), the greatest index of differentiation in the equation. -- Sailing orders (Naut.), the final instructions given to the commander of a ship of war before a cruise. -- Sealed orders, orders sealed, and not to be opened until a certain time, or arrival at a certain place, as after a ship is at sea. -- Standing order. (a) A continuing regulation for the conduct of parliamentary business. (b) (Mil.) An order not subject to change by an officer temporarily in command. -- To give order, to give command or directions. Shak. -- To take order for, to take charge of; to make arrangements concerning.
[1913 Webster] Whiles I take order for mine own affairs. Shak.

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Syn. -- Arrangement; management. See Direction.
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Order
Or"der (?), v. t. [imp. & p. p. Ordered (?); p. pr. & vb. n. Ordering.] [From Order, n.] 1. To put in order; to reduce to a methodical arrangement; to arrange in a series, or with reference to an end. Hence, to regulate; to dispose; to direct; to rule.
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To him that ordereth his conversation aright. Ps. 1. 23.
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Warriors old with ordered spear and shield. Milton.
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2. To give an order to; to command; as, to order troops to advance.
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3. To give an order for; to secure by an order; as, to order a carriage; to order groceries.
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4. (Eccl.) To admit to holy orders; to ordain; to receive into the ranks of the ministry.
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These ordered folk be especially titled to God. Chaucer.
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Persons presented to be ordered deacons. Bk. of Com. Prayer.
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Order arms (Mil.), the command at which a rifle is brought to a position with its butt resting on the ground; also, the position taken at such a command.
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Order
Or"der, v. i. To give orders; to issue commands.
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Orderable
Or"der*a*ble (?), a. Capable of being ordered; tractable. [R.]
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Being very orderable in all his sickness. Fuller.
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ordered
ordered adj. 1. having or evincing a systematic arrangement; especially, having elements succeeding in order according to rule; as, an ordered sequence; an ordered pair. Opposite of disordered or unordered. [Narrower terms: abecedarian, alphabetical; consecutive, sequent, sequential, serial, successive ]
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2. arranged in order.
Syn. -- orderly, regulated.
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3. in good order.
Syn. -- so(predicate).
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4. disposed or placed in a particular kind of order. OPposite of disarranged.
Syn. -- arranged.
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5. arranged according to a quantitative criterion.
Syn. -- graded, ranked.
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6. marked by an orderly, logical, and aesthetically consistent relation of parts.
Syn. -- consistent, logical, orderly.
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Orderer
Or"der*er (?), n. 1. One who puts in order, arranges, methodizes, or regulates.
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2. One who gives orders.
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Ordering
Or"der*ing, n. Disposition; distribution; management. South.
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Orderless
Or"der*less, a. Being without order or regularity; disorderly; out of rule.
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Orderliness
Or"der*li*ness (?), n. The state or quality of being orderly.
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Orderly
Or"der*ly, a. 1. Conformed to order; in order; regular; as, an orderly course or plan. Milton.
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2. Observant of order, authority, or rule; hence, obedient; quiet; peaceable; not unruly; as, orderly children; an orderly community.
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3. Performed in good or established order; well-regulated. “An orderly . . . march.” Clarendon.
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4. Being on duty; keeping order; conveying orders. “Aids-de-camp and orderly men.” Sir W. Scott.
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Orderly book (Mil.), a book for every company, in which the general and regimental orders are recorded. -- Orderly officer, the officer of the day, or that officer of a corps or regiment whose turn it is to supervise for the day the arrangements for food, cleanliness, etc. Farrow. -- Orderly room. (a) The court of the commanding officer, where charges against the men of the regiment are tried. (b) The office of the commanding officer, usually in the barracks, whence orders emanate. Farrow. -- Orderly sergeant, the first sergeant of a company.
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Orderly
Or"der*ly (?), adv. According to due order; regularly; methodically; duly.
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You are blunt; go to it orderly. Shak.
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Orderly
Or"der*ly, n.; pl. Orderlies (&unr_;). 1. (Mil.) A noncommissioned officer or soldier who attends a superior officer to carry his orders, or to render other service.
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Orderlies were appointed to watch the palace. Macaulay.
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2. A street sweeper. [Eng.] Mayhew.
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Ordinability
Or`di*na*bil"i*ty (?), n. Capability of being ordained or appointed. [Obs.] Bp. Bull.
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Ordinable
Or"di*na*ble (?), a. [See Ordinate, Ordain.] Capable of being ordained or appointed. [Obs.]
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Ordinal
Or"di*nal (?), a. [L. ordinalis, fr. ordo, ordinis, order. See Order.] 1. Indicating order or succession; as, the ordinal numbers, first, second, third, etc. Contrasted to cardinal.
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2. Of or pertaining to an order.
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Ordinal
Or"di*nal, n. 1. A word or number denoting order or succession.
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2. (Ch. of Eng.) The book of forms for making, ordaining, and consecrating bishops, priests, and deacons.
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3. (R. C. Ch.) A book containing the rubrics of the Mass. [Written also ordinale.]
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Ordinalism
Or"di*nal*ism (?), n. The state or quality of being ordinal. [R.] Latham.
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Ordinance
Or"di*nance (?), n. [OE. ordenance, OF. ordenance, F. ordonnance. See Ordain, and cf. Ordnance, Ordonnance.]
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1. Orderly arrangement; preparation; provision. [Obs.] Spenser.
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They had made their ordinance
Of victual, and of other purveyance.
Chaucer.
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2. A rule established by authority; a permanent rule of action; a statute, law, regulation, rescript, or accepted usage; an edict or decree; esp., a local law enacted by a municipal government; as, a municipal ordinance.
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Thou wilt die by God's just ordinance. Shak.
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By custom and the ordinance of times. Shak.
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Walking in all the commandments and ordinances of the Lord blameless. Luke i. 6.
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&hand_; Acts of Parliament are sometimes called ordinances; also, certain colonial laws and certain acts of Congress under Confederation; as, the ordinance of 1787 for the government of the territory of the United States northwest of the Ohio River; the colonial ordinance of 1641, or 1647. This word is often used in Scripture in the sense of a law or statute of sovereign power. Ex. xv. 25. Num. x. 8. Ezra iii. 10. Its most frequent application now in the United States is to laws and regulations of municipal corporations. Wharton (Law Dict.).
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3. (Eccl.) An established rite or ceremony.
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4. Rank; order; station. [Obs.] Shak.
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5. [See Ordnance.] Ordnance; cannon. [Obs.] Shak.
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Ordinand
Or"di*nand` (?), n. [L. ordinandus, gerundive of ordinare. See Ordain.] One about to be ordained.
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Ordinant
Or"di*nant (?), a. [L. ordinans, p. pr. of ordinare. See Ordain.] Ordaining; decreeing. [Obs.] Shak.
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Ordinant
Or"di*nant, n. One who ordains. F. G. Lee.
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Ordinarily
Or"di*na*ri*ly (?), adv. According to established rules or settled method; as a rule; commonly; usually; in most cases; as, a winter more than ordinarily severe.
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Those who ordinarily pride themselves not a little upon their penetration. I. Taylor.
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Ordinary
Or"di*na*ry (?), a. [L. ordinarius, fr. ordo, ordinis, order: cf. F. ordinaire. See Order.] 1. According to established order; methodical; settled; regular. “The ordinary forms of law.” Addison.
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2. Common; customary; usual. Shak.
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Method is not less requisite in ordinary conversation that in writing. Addison.
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3. Of common rank, quality, or ability; not distinguished by superior excellence or beauty; hence, not distinguished in any way; commonplace; inferior; of little merit; as, men of ordinary judgment; an ordinary book.
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An ordinary lad would have acquired little or no useful knowledge in such a way. Macaulay.
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Ordinary seaman (Naut.), one not expert or fully skilled, and hence ranking below an able seaman.
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Syn. -- Normal; common; usual; customary. See Normal. -- Ordinary, Common. A thing is common in which many persons share or partake; as, a common practice. A thing is ordinary when it is apt to come round in the regular common order or succession of events.
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Ordinary
Or"di*na*ry, n.; pl. Ordinaries (-r&ibreve_;z). 1. (Law) (a) (Roman Law) An officer who has original jurisdiction in his own right, and not by deputation. (b) (Eng. Law) One who has immediate jurisdiction in matters ecclesiastical; an ecclesiastical judge; also, a deputy of the bishop, or a clergyman appointed to perform divine service for condemned criminals and assist in preparing them for death. (c) (Am. Law) A judicial officer, having generally the powers of a judge of probate or a surrogate.
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2. The mass; the common run. [Obs.]
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I see no more in you than in the ordinary
Of nature's salework.
Shak.
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3. That which is so common, or continued, as to be considered a settled establishment or institution. [R.]
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Spain had no other wars save those which were grown into an ordinary. Bacon.
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4. Anything which is in ordinary or common use.
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Water buckets, wagons, cart wheels, plow socks, and other ordinaries. Sir W. Scott.
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5. A dining room or eating house where a meal is prepared for all comers, at a fixed price for the meal, in distinction from one where each dish is separately charged; a table d'hôte; hence, also, the meal furnished at such a dining room. Shak.
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All the odd words they have picked up in a coffeehouse, or a gaming ordinary, are produced as flowers of style. Swift.
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He exacted a tribute for licenses to hawkers and peddlers and to ordinaries. Bancroft.
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6. (Her.) A charge or bearing of simple form, one of nine or ten which are in constant use. The bend, chevron, chief, cross, fesse, pale, and saltire are uniformly admitted as ordinaries. Some authorities include bar, bend sinister, pile, and others. See Subordinary.
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In ordinary. (a) In actual and constant service; statedly attending and serving; as, a physician or chaplain in ordinary. An ambassador in ordinary is one constantly resident at a foreign court. (b) (Naut.) Out of commission and laid up; -- said of a naval vessel. -- Ordinary of the Mass (R. C. Ch.), the part of the Mass which is the same every day; -- called also the canon of the Mass.
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Ordinaryship
Or"di*na*ry*ship (?), n. The state of being an ordinary. [R.] Fuller.
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Ordinate
Or"di*nate (?), a. [L. ordinatus, p. p. of ordinare. See Ordain.] Well-ordered; orderly; regular; methodical. “A life blissful and ordinate.” Chaucer.
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Ordinate figure (Math.), a figure whose sides and angles are equal; a regular figure.
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Ordinate
Or"di*nate, n. (Geom.) The distance of any point in a curve or a straight line, measured on a line called the axis of ordinates or on a line parallel to it, from another line called the axis of abscissas, on which the corresponding abscissa of the point is measured.
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&hand_; The ordinate and abscissa, taken together, are called coordinates, and define the position of the point with reference to the two axes named, the intersection of which is called the origin of coordinates. In a typical two-dimensional plot, viewed on a plane graph in its normal orientation with perpendicular axes, the ordinate is the vertical axis; when the axes are labeled as x and y, it is the y-axis. See Coordinate.
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Ordinate
Or"di*nate (?), v. t. To appoint, to regulate; to harmonize. Bp. Hall.
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Ordinately
Or"di*nate*ly (?), adv. In an ordinate manner; orderly. Chaucer. Skelton.
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Ordination
Or`di*na"tion (?), n. [L. ordinatio: cf. F. ordination.] 1. The act of ordaining, appointing, or setting apart; the state of being ordained, appointed, etc.
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The holy and wise ordination of God. Jer. Taylor.
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Virtue and vice have a natural ordination to the happiness and misery of life respectively. Norris.
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2. (Eccl.) The act of setting apart to an office in the Christian ministry; the conferring of holy orders.
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3. Disposition; arrangement; order. [R.]
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Angle of ordination (Geom.), the angle between the axes of coordinates.
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Ordinative
Or"di*na*tive (?), a. [L. ordinativus.] Tending to ordain; directing; giving order. [R.] Gauden.
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Ordinator
Or"di*na`tor (?), n. [L.] One who ordains or establishes; a director. [R.] T. Adams.
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Ordnance
Ord"nance (?), n. [From OE. ordenance, referring orig. to the bore or size of the cannon. See Ordinance.] Heavy weapons of warfare; cannon, or great guns, mortars, and howitzers; artillery; sometimes, a general term for all weapons, ammunitiion, and appliances used in war.
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All the battlements their ordnance fire. Shak.
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Then you may hear afar off the awful roar of his [Rufus Choate's] rifled ordnance. E. Everett.
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Ordnance survey, the official survey of Great Britain and Ireland, conducted by the ordnance department.
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Ordonnance
Or"don*nance (?), n. [F. See Ordinance.] (Fine Arts) The disposition of the parts of any composition with regard to one another and the whole.
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Their dramatic ordonnance of the parts. Coleridge.
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Ordonnant
Or"don*nant (?), a. [F., p. pr. of ordonner. See Ordinant.] Of or pertaining to ordonnance. Dryden.
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Ordovian
Or*do"vi*an (?), a. & n. (Geol.) Ordovician.
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Ordovician
Or`do*vi"cian (?), a. [From L. Ordovices, a Celtic people in Wales.] (Geol.) Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian. -- n. The Ordovician formation.
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Ordure
Or"dure (?), n. [F. ordure, OF. ord filthy, foul, fr. L. horridus horrid. See Horrid.]
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1. Dung; excrement; faeces. Shak.
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2. Defect; imperfection; fault. [Obs.] Holland.
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Ordurous
Or"dur*ous (?), a. Of or pertaining to ordure; filthy. Drayton.
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Ore
Ore (ōr), n. [AS. ār.] Honor; grace; favor; mercy; clemency; happy augury. [Obs.] Chaucer.
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Ore
Ore, n. [AS. ōra; cf. ār brass, bronze, akin to OHG. ēr, G. ehern brazen, Icel. eir brass, Goth. ais, L. aes, Skr. ayas iron. √210. Cf. Ora, Era.]
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1. The native form of a metal, whether free and uncombined, as gold, copper, etc., or combined, as iron, lead, etc. Usually the ores contain the metals combined with oxygen, sulphur, arsenic, etc. (called mineralizers).
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2. (Mining) A native metal or its compound with the rock in which it occurs, after it has been picked over to throw out what is worthless.
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3. Metal; as, the liquid ore. [R.] Milton.
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Ore hearth, a low furnace in which rich lead ore is reduced; -- also called Scotch hearth. Raymond.
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Oread
O"re*ad (?), n. [L. Oreas, -adis, Gr. 'Oreia`s, -a`dos, fr. 'o`ros mountain: cf. F. oréade.] (Class. Myth.) One of the nymphs of mountains and grottoes.
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Like a wood nymph light,
Oread or Dryad.
Milton.
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Oreades
O*re"a*des (?), n. pl. [NL.] (Zool.) A group of butterflies which includes the satyrs. See Satyr, 2.
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Orectic
O*rec"tic (?), a. [Gr. 'orektiko`s, fr. 'o`rexis, yearning after, from 'ore`gein to reach after.] (Philos.) Of or pertaining to the desires; hence, impelling to gratification; appetitive.
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Oregon grape
Or"e*gon grape` (&obreve_;r"&euptack_;*g&obreve_;n grāp`). (Bot.) An evergreen species of barberry (Berberis Aquifolium), of Oregon and California; also, its roundish, blue-black berries.
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Oregonian
Oregonian prop. n. A resident of Oregon.
[WordNet 1.5]

Oreide
O"re*ide (?), n. See Oroide.
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oreo
oreo n. A confection consisting of a white cream filling sandwiched between two chocolate cookies.
Syn. -- oreo cookie.
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Oreodon
O"re*o*don (?), prop. n. [Gr. 'o`ros, -eos, mountain + 'odoy`s, 'odo`ntos, tooth.] (Paleon.) A genus of extinct herbivorous mammals, abundant in the Tertiary formation of the Rocky Mountains. It is more or less related to the camel, hog, and deer.
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Oreodont
O"re*o*dont (?), a. (Paleon.) Resembling, or allied to, the genus Oreodon.
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Oreographic
O`re*o*graph"ic (?), a. Of or pertaining to oreography.
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Oreography
O`re*og"ra*phy (?), n. [Gr. 'o`ros, -eos, mountain + -graphy.] The science of mountains; orography.
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Oreopteris
Oreopteris prop. n. A genus of ferns having species, formerly included in genus Dryopteris or Thelypteris.
Syn. -- genus Oreopteris.
[WordNet 1.5]

Oreortyx
Oreortyx prop. n. A genus of birds including the mountain quail of the western U. S.
Syn. -- genus Oreortyx.
[WordNet 1.5]

Oreoselin
O`re*os"e*lin (?), n. (Chem.) A white crystalline substance which is obtained indirectly from the root of an umbelliferous plant (Imperatoria Oreoselinum), and yields resorcin on decomposition.
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Oreosoma
O`re*o*so"ma (?), n. pl. [NL., from Gr. 'o`ros, -eos, mountain + sw^ma body.] (Zool.) A genus of small oceanic fishes, remarkable for the large conical tubercles which cover the under surface.
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Oreweed
Ore"weed` (?), n. Same as Oarweed.
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Orewood
Ore"wood` (?), n. Same as Oarweed.
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Orfe
Orf
{ Orf (?), Or"fe (?), } n. (Zool.) A bright-colored domesticated variety of the id. See Id.
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Orfgild
Orf"gild` (?), n. [AS. orf, yrfe, cattle, property + gild, gield, money, fine.] (O. Eng. Law) Restitution for cattle; a penalty for taking away cattle. Cowell.
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Orfray
Or"fray (?), n. [F. orfraie. Cf. Osprey, Ossifrage.] (Zool.) The osprey. [Obs.] Holland.
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Orfrays
Or"frays (?), n. [OF. orfrais, F. orfroi; F. or gold + fraise, frise, fringe, ruff. See Fraise, and cf. Auriphrygiate.] See Orphrey. [Obs.] Rom. of R.
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Orgal
Or"gal (?), n. (Chem.) See Argol. [Obs.]
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Organ
Or"gan (ôr"g&aitalic_;n), n. [L. organum, Gr. 'o`rganon; akin to 'e`rgon work, and E. work: cf. F. organe. See Work, and cf. Orgue, Orgy.] 1. An instrument or medium by which some important action is performed, or an important end accomplished; as, legislatures, courts, armies, taxgatherers, etc., are organs of government.
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2. (Biol.) A natural part or structure in an animal or a plant, capable of performing some special action (termed its function), which is essential to the life or well-being of the whole; as, the heart, lungs, etc., are organs of animals; the root, stem, foliage, etc., are organs of plants.
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&hand_; In animals the organs are generally made up of several tissues, one of which usually predominates, and determines the principal function of the organ. Groups of organs constitute a system. See System.
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3. A component part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine.
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4. A medium of communication between one person or body and another; as, the secretary of state is the organ of communication between the government and a foreign power; a newspaper is the organ of its editor, or of a party, sect, etc. A newsletter distributed within an organization is often called its house organ.
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5. [Cf. AS. organ, fr. L. organum.] (Mus.) A wind instrument containing numerous pipes of various dimensions and kinds, which are filled with wind from a bellows, and played upon by means of keys similar to those of a piano, and sometimes by foot keys or pedals; -- formerly used in the plural, each pipe being considered an organ.
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The deep, majestic, solemn organs blow. Pope.
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&hand_; Chaucer used the form orgon as a plural.
[1913 Webster] The merry orgon . . . that in the church goon [go].

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Barrel organ, Choir organ, Great organ, etc. See under Barrel, Choir, etc. -- Cabinet organ (Mus.), an organ of small size, as for a chapel or for domestic use; a reed organ. -- Organ bird (Zool.), a Tasmanian crow shrike (Gymnorhina organicum). It utters discordant notes like those of a hand organ out of tune. -- Organ fish (Zool.), the drumfish. -- Organ gun. (Mil.) Same as Orgue (b). -- Organ harmonium (Mus.), an harmonium of large capacity and power. -- Organ of Corti (Anat.), a complicated structure in the cochlea of the ear, including the auditory hair cells, the rods or fibers of Corti, the membrane of Corti, etc. See Note under Ear. -- Organ pipe. See Pipe, n., 1. -- Organ-pipe coral. (Zool.) See Tubipora. -- Organ point (Mus.), a passage in which the tonic or dominant is sustained continuously by one part, while the other parts move.
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Organ
Or"gan, v. t. To supply with an organ or organs; to fit with organs; to organize. [Obs.]
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Thou art elemented and organed for other apprehensions. Bp. Mannyngham.
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Organdy
Organdie
{ Or"gan*die, Or"gan*dy } (?), n. [F. organdi.] A kind of transparent light but stiff muslin.
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organelle
organelle n. (Biol.) a specialized part of a cell performing a specific function, usually visible under the microscope as a distinct object; it is analogous to an organ{2}, but on a microscopic scale.
Syn. -- cell organ.
[WordNet 1.5]

Organic
Or*gan"ic (ôr*găn"&ibreve_;k), a. [L. organicus, Gr. 'organiko`s: cf. F. organique.] 1. (Biol.) Of or pertaining to an organ or its functions, or to objects composed of organs; consisting of organs, or containing them; as, the organic structure of animals and plants; exhibiting characters peculiar to living organisms; as, organic bodies, organic life, organic remains. Cf. Inorganic.
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2. Produced by the organs; as, organic pleasure. [R.]
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3. Instrumental; acting as instruments of nature or of art to a certain destined function or end. [R.]
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Those organic arts which enable men to discourse and write perspicuously. Milton.
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4. Forming a whole composed of organs. Hence: Of or pertaining to a system of organs; inherent in, or resulting from, a certain organization; as, an organic government; his love of truth was not inculcated, but organic.
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5. (Chem.) Of or pertaining to compounds which are derivatives of hydrocarbons; pertaining to, or denoting, any one of a large series of carbon-containing compounds which are related to the carbon compounds produced by biological processes (such as methane, oils, fats, sugars, alcohols, ethers, proteins, etc.) and include many substances of artificial production which may or may not occur in animals or plants; -- contrasted with inorganic. Borderline cases exist which may be classified as either organic or inorganic, such as carbon terachloride (which may be viewed as a derivative of methane), but in general a compound must have a carbon with a hydrogen atom or another carbon atom attached to it to be viewed as truly organic, i.e. included in the subject matter of organic chemistry.
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&hand_; The principles of organic and inorganic chemistry are identical; but the enormous number and the completeness of related series of organic compounds, together with their remarkable facility of exchange and substitution, offer an illustration of chemical reaction and homology not to be paralleled in inorganic chemistry.
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Organic analysis (Chem.), the analysis of organic compounds, concerned chiefly with the determination of carbon as carbon dioxide, hydrogen as water, oxygen as the difference between the sum of the others and 100 per cent, and nitrogen as free nitrogen, ammonia, or nitric oxide; -- formerly called ultimate analysis, in distinction from proximate analysis. -- Organic chemistry. See under Chemistry. -- Organic compounds. (Chem.) Chemical substances which are organic{5}. See Carbon compounds, under Carbon. -- Organic description of a curve (Geom.), the description of a curve on a plane by means of instruments. Brande & C. -- Organic disease (Med.), a disease attended with morbid changes in the structure of the organs of the body or in the composition of its fluids; -- opposed to functional disease. -- Organic electricity. See under Electricity. -- Organic law or Organic laws, a law or system of laws, or declaration of principles fundamental to the existence and organization of a political or other association; a constitution. -- Organic stricture (Med.), a contraction of one of the natural passages of the body produced by structural changes in its walls, as distinguished from a spasmodic stricture, which is due to muscular contraction.
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Organical
Or*gan"ic*al (?), a. Organic.
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The organical structure of human bodies, whereby they live and move. Bentley.
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Organically
Or*gan"ic*al*ly, adv. In an organic manner; by means of organs or with reference to organic functions; hence, fundamentally. Gladstone.
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Organicalness
Or*gan"ic*al*ness, n. The quality or state of being organic.
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Organicism
Or*gan"i*cism (?), n. (Med.) The doctrine of the localization of disease, or which refers it always to a material lesion of an organ. Dunglison.
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Organific
Or`gan*if"ic (?), a. [Organ + L. -ficare (in comp.) to make. See fy.] Making an organic or organized structure; producing an organism; acting through, or resulting from, organs. Prof. Park.
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organise
organise v. t. Same as organize. [Chiefly Brit.]
[WordNet 1.5]

Organism
Or"gan*ism (?), n. [Cf. F. organisme.] 1. Organic structure; organization. “The advantageous organism of the eye.” Grew.
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2. (Biol.) An organized being; a living body, either vegetable or animal, composed of different organs or parts with functions which are separate, but mutually dependent, and essential to the life of the individual.
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&hand_; Some of the lower forms of life are so simple in structure as to be without organs, but are still called organisms, since they have different parts analogous in functions to the organs of higher plants and animals.
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organismic
organismal
organismal organismic adj. 1. of or pertaining to organism (definition 2). the organismic theory of the state
[WordNet 1.5]

Organist
Or"gan*ist, n. [Cf. F. organiste.] 1. (Mus.) One who plays on the organ.
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2. (R. C. Ch.) One of the priests who organized or sung in parts. [Obs.]
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Organista
Or`ga*nis"ta (?), n. [Sp., an organis.] (Zool.) Any one of several South American wrens, noted for the sweetness of their song.
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Organity
Or*gan"i*ty (ôr*găn"&ibreve_;*t&ybreve_;), n. Organism. [R.]
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Organizability
Or`gan*i`za*bil"i*ty (ôr`g&aitalic_;n*ī`z&adot_;*b&ibreve_;l"&ibreve_;*t&ybreve_;), n. Quality of being organizable; capability of being organized.
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Organizable
Or"gan*i`za*ble (ôr"g&aitalic_;n*ī`z&adot_;*b'l), a. Capable of being organized; esp. (Biol.), capable of being formed into living tissue; as, organizable matter.
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Organization
Or`gan*i*za"tion (ôr`g&aitalic_;n*ī*zā"shŭn), n. [Cf. F. organisation.]
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1. The act of organizing; the act of arranging in a systematic way for use or action; as, the organization of an army, or of a deliberative body. “The first organization of the general government.” Pickering.
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2. The state of being organized.
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3. That which is organized; an organized existence; an organism; specif. (Biol.), an arrangement of parts for the performance of the functions necessary to life.
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The cell may be regarded as the most simple, the most common, and the earliest form of organization. McKendrick.
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4. Specifically: A group of persons associated together for a common purpose and having a set of rules which specify the relations of the individual members to the whole gorup.
[PJC]

5. The manner in which something is organized; the relations included in an organized state or condition; as, the organization of the department permits ad hoc groups to form.
[PJC]

What is organization but the connection of parts in and for a whole, so that each part is, at once, end and means? Coleridge.
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organizational
organizational adj. Of or pertaining to organization; as, organizational structure.
[WordNet 1.5]

Organize
Or"gan*ize (ôr"g&aitalic_;n*īz), v. t. [imp. & p. p. Organized (ôr"g&aitalic_;n*īzd); p. pr. & vb. n. Organizing (ôr"g&aitalic_;n*ī*z&ibreve_;ng).] [Cf. F. organiser, Gr. 'organi`zein. See Organ.] 1. (Biol.) To furnish with organs; to give an organic structure to; to endow with capacity for the functions of life; as, an organized being; organized matter; -- in this sense used chiefly in the past participle.
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These nobler faculties of the mind, matter organized could never produce. Ray.
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2. To arrange or constitute in parts, each having a special function, act, office, or relation; to systematize; to get into working order; -- applied to products of the human intellect, or to human institutions and undertakings, as a science, a government, an army, a war, etc.
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This original and supreme will organizes the government. Cranch.
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3. (Mus.) To sing in parts; as, to organize an anthem. [R.] Busby.
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organized
or"gan*ized adj. 1. Same as arranged; as, an organized tour.
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2. Formed into an organization. Opposite of unorganized. [Narrower terms: corporate, incorporated]
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3. well-conducted. Opposite of disorganized. Also See: systematic.
Syn. -- organized.
[WordNet 1.5]

4. Arranged according to a system or rule.
Syn. -- systematized.
[WordNet 1.5]

5. Being a member of or formed into a labor union; -- of workers, used especially in the phrase “organized labor”. Opposite of nonunion.
Syn. -- unionized, union.
[WordNet 1.5]

organized crime
organized crime n. Groups of persons organized for illegal purposes, such as bootlegging, conducting illegal gambling, loansharking, extortion, etc.; -- a general term encompassing most forms of criminal groups, but especially those that are consolidated into “families” more or less recognizing each other's different regions of operation; sometimes considered synonymous with the mafia or the syndicate.
[PJC]

Organizer
Or"gan*i`zer (?), n. One who organizes.
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Organling
Or"gan*ling (?), n. (Zool.) A large kind of sea fish; the orgeis.
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Organo-
Or"ga*no- (?). [See Organ.] A combining form denoting relation to, or connection with, an organ or organs.
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Organogen
Or*gan"o*gen (?), n. [Organo- + -gen.] (Chem.) A name given to any one of the four elements, carbon, hydrogen, oxygen, and nitrogen, which are especially characteristic ingredients of organic compounds; also, by extension, to other elements sometimes found in the same connection; as sulphur, phosphorus, etc.
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Organogenesis
Or`ga*no*gen"e*sis (?), n. [Organo- + genesis.] 1. (Biol.) The origin and development of organs in animals and plants.
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2. (Biol.) The germ history of the organs and systems of organs, -- a branch of morphogeny. Haeckel.
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Organogenic
Or`ga*no*gen"ic (?), a. (Biol.) Of or pertaining to organogenesis.
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Organogeny
Or`ga*nog"e*ny (?), n. (Biol.) Organogenesis.
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Organographical
Organographic
{ Or`ga*no*graph"ic (?), Or`ga*no*graph"ic*al (?), } a. [Cf. F. organographique.] Of or pertaining to organography.
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Organographist
Or`ga*nog"ra*phist (?), n. One versed in organography.
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Organography
Or`ga*nog"ra*phy (?), n. [Organo- + -graphy: cf. F. organographie.] A description of the organs of animals or plants.
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Organoleptic
Or`ga*no*lep"tic (?), a. [F. organoleptique, fr. Gr. &unr_; an organ + &unr_; to lay hold of.] (Physiol.) Making an impression upon an organ; plastic; -- said of the effect or impression produced by any substance on the organs of touch, taste, or smell, and also on the organism as a whole.
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Organological
Or`ga*no*log"ic*al (?), a. Of or relating to organology.
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Organology
Or`ga*nol"o*gy (?), n. [Organ + -logy: cf. F. organologie.] 1. The science of organs or of anything considered as an organic structure.
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The science of style, as an organ of thought, of style in relation to the ideas and feelings, might be called the organology of style. De Quincey.
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2. That branch of biology which treats, in particular, of the organs of animals and plants. See Morphology.
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organometallic
or`ga*no*me*tal"lic (?), a. (Chem.) Pertaining to, or denoting, any one of a series of compounds of certain metallic elements bound to organic radicals; such as, methylmercury, zinc methyl, sodium ethyl, etc.; formerly refered to as metalorganic.
[1913 Webster +PJC]

Organum
Organon
{ ‖Or"ga*non (?), ‖Or"ga*num (?), } n. [NL. organon, L. organum. See Organ.] An organ or instrument; hence, a method by which philosophical or scientific investigation may be conducted; -- a term adopted from the Aristotelian writers by Lord Bacon, as the title (“Novum Organon”) of part of his treatise on philosophical method. Sir. W. Hamilton.
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Organonymy
Or`ga*non"y*my (?), n. [Organo- + Gr.&unr_;, for &unr_;, a name.] (Biol.) The designation or nomenclature of organs. B. G. Wilder.
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Organophyly
Or`ga*noph"y*ly (?), n. [Organo- + Gr. &unr_; clan.] (Biol.) The tribal history of organs, -- a branch of morphophyly. Haeckel.
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Organoplastic
Or`ga*no*plas"tic (?), a. [Organo- + -plastic.] (Biol.) Having the property of producing the tissues or organs of animals and plants; as, the organoplastic cells.
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Organoscopy
Or`ga*nos"co*py (?), n. [Organo- + -scopy.] Phrenology. Fleming.
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Organotrophic
Or`ga*no*troph"ic (?), a. [Organo- + Gr. &unr_; to nourish.] (Biol.) Relating to the creation, organization, and nutrition of living organs or parts.
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Organule
Or"gan*ule (?), n. [Dim. of organ.] (Anat.) One of the essential cells or elements of an organ. See Sense organule, under Sense. Huxley.
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Organy
Or"ga*ny (?), n. [AS. Organe, from the Latin. See Origan.] (Bot.) See Origan.
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organzine
or"gan*zine (ôr"g&aitalic_;n*z&ibreve_;n), n. [F. organsin; cf. Sp. organsino, It. organzino.] A kind of double thrown silk of very fine texture, that is, silk twisted like a rope with different strands, so as to increase its strength.
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orgasm
or"gasm (ôr"găz'm), n. [F. orgasme; cf. Gr. 'orgasmo`s a kneading, softening, prob. confused with 'orga^n to swell, especially with lust; to feel an ardent desire.] (Physiol.) Eager or immoderate excitement or action; the state of turgescence of any organ; erethism.
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2. Especially: The peak of the physical pleasurable sexual excitement caused by stimulation of the sexual organs, as in intercourse; in the male, it is usually accompanied by ejaculation.
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3. Hence: An eruption of intense, uncontrolled excitement; -- used of groups and individuals.
[PJC]

Orgeat
Or"geat (?), n. [F., fr. orge barley, L. hordeum.] A sirup in which, formerly, a decoction of barley entered, but which is now prepared with an emulsion of almonds, -- used to flavor beverages or edibles.
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Orgeis
Or"ge*is (?), n. (Zool.) See Organling.
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Orgiastic
Or`gi*as"tic (?), a. [Gr. &unr_;. See Orgy.] Pertaining to, or of the nature of, orgies. Elton.
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Orgy
Or"gy (?), n.; sing. Orgies (&unr_;). [F. orgie, orgies, L. orgia, pl., Gr. &unr_;; akin to &unr_; work. See Organ, and Work.]
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1. A sacrifice accompanied by certain ceremonies in honor of some pagan deity; especially, the ceremonies observed by the Greeks and Romans in the worship of Dionysus, or Bacchus, which were characterized by wild and dissolute revelry. Usually in the plural form. [The singular is rarely used in this sense.]
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As when, with crowned cups, unto the Elian god,
Those priests high orgies held.
Drayton.
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2. Wild, drunken, or licentious revelry; an uninhibited carouse. B. Jonson. Tennyson.
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3. A series of sexual activities involving more than two couples in a group.
[PJC]

4. Hence: An event characterized by unrestrained indulgence in passion; as, an orgy of buying of internet stocks.
[PJC]

Orgillous
Or"gil*lous (?), a. [OF. orguillous, F. orgueilleux, fr. OF. orgoil pride, F. orgueil.] Proud; haughty. [Obs.] Shak.
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Orgue
Orgue (?), n. [F., fr. L. organum organ, Gr. &unr_;. See Organ.] (Mil.) (a) Any one of a number of long, thick pieces of timber, pointed and shod with iron, and suspended, each by a separate rope, over a gateway, to be let down in case of attack. (b) A piece of ordnance, consisting of a number of musket barrels arranged so that a match or train may connect with all their touchholes, and a discharge be secured almost or quite simultaneously.
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Orgulous
Or"gu*lous (?), a. See Orgillous. [Obs.]
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Orgy
Or"gy (?), n.; pl. Orgies (&unr_;). A frantic revel; drunken revelry. See Orgies
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Orgyia
Or*gy"i*a (&unr_;), prop. n. [NL., fr. Gr. &unr_; the length of the outstretched arms. So named because, when at rest, it stretches forward its fore legs like arms.] (Zool.). A genus of bombycid moths whose caterpillars (esp. those of Orgyia leucostigma) are often very injurious to fruit trees and shade trees. The female is wingless. Called also vaporer moth.
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Oricalche
Or"i*calche (&obreve_;r"&ibreve_;*kălk), n. [Obs.] See Orichalch.
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Costly oricalche from strange Phoenice. Spenser.
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Orichalceous
Or`i*chal"ce*ous (?), a. Pertaining to, or resembling, orichalch; having a color or luster like that of brass. Maunder.
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Orichalch
Or"i*chalch (?), n. [L. orichalcum, Gr. &unr_;; 'o`ros, mountain + chalko`s brass: cf. F. orichalque.] A metallic substance, resembling gold in color, but inferior in value; a mixed metal of the ancients, resembling brass; -- called also aurichalcum, orichalcum, etc.
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Oriel
O"ri*el (?), n. [OF. oriol gallery, corridor, LL. oriolum portico, hall, prob. fr. L. aureolus gilded, applied to an apartment decorated with gilding. See Oriole.] [Formerly written also oriol, oryal, oryall.]
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1. A gallery for minstrels. [Obs.] W. Hamper.
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2. A small apartment next a hall, where certain persons were accustomed to dine; a sort of recess. [Obs.] Cowell.
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3. (Arch.) A bay window. See Bay window.
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The beams that thro' the oriel shine
Make prisms in every carven glass.
Tennyson.
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&hand_; There is no generally admitted difference between a bay window and an oriel. In the United States the latter name is often applied to bay windows which are small, and either polygonal or round; also, to such as are corbeled out from the wall instead of resting on the ground.
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Oriency
O"ri*en*cy (?), n. [See Orient.] Brightness or strength of color. [R.] E. Waterhouse.
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Orient
O"ri*ent (ō"r&ibreve_;*&eitalic_;nt), a. [F., fr. L. oriens, -entis, p. pr. of oriri to rise. See Origin.] 1. Rising, as the sun.
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Moon, that now meet'st the orient sun. Milton.
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2. Eastern; oriental. “The orient part.” Hakluyt.
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3. Bright; lustrous; superior; pure; perfect; pellucid; -- used of gems and also figuratively, because the most perfect jewels are found in the East. “Pearls round and orient.” Jer. Taylor.Orient gems.” Wordsworth.Orient liquor in a crystal glass.” Milton.
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Orient
O"ri*ent, n. 1. The part of the horizon where the sun first appears in the morning; the east.
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[Morn] came furrowing all the orient into gold. Tennyson.
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2. The countries of Asia or the East. Chaucer.
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Best built city throughout the Orient. Sir T. Herbert.
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3. A pearl of great luster. [R.] Carlyle.
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Orient
O"ri*ent (ō"r&ibreve_;*&ebreve_;nt), v. t. [F. orienter. Cf. Orientate.] 1. To define the position of, in relation to the orient or east; hence, to ascertain the bearings of.
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2. Hence: To acquaint with new surroundings or a new situation.
[PJC]

3. Fig.: To correct or set right by recurring to first principles; to arrange in order; to orientate.
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4. Same as Orientate, 2.
[Webster 1913 Suppl.]

5. To place (a map or chart) so that its east side, north side, etc., lie toward the corresponding parts of the horizon; specif. (Surv.), to rotate (a map attached to a plane table) until the line of direction between any two of its points is parallel to the corresponding direction in nature.
[Webster 1913 Suppl.]

Oriental
O`ri*en"tal (ō`r&ibreve_;*&ebreve_;n"t&aitalic_;l), a. [L. orientalis: cf. F. oriental.] Of or pertaining to the orient or east; eastern; concerned with the East or Orientalism; -- opposed to occidental; as, Oriental countries.
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The sun's ascendant and oriental radiations. Sir T. Browne.
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Oriental
O`ri*en"tal, n. 1. A native or inhabitant of the Orient or some Eastern part of the world; an Asiatic.
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2. pl. (Eccl.) Eastern Christians of the Greek rite.
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Orientalism
O`ri*en"tal*ism (?), n. [Cf. F. orientalisme.]
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1. Any system, doctrine, custom, expression, etc., peculiar to Oriental people.
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2. Knowledge or use of Oriental languages, history, literature, etc. London Quart. Rev.
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Orientalist
O`ri*en"tal*ist, n. [Cf. F. orientaliste.]
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1. An inhabitant of the Eastern parts of the world; an Oriental.
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2. One versed in Eastern languages, literature, etc.; as, the Paris Congress of Orientalists. Sir J. Shore.
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Orientality
O`ri*en*tal"i*ty (?), n. The quality or state of being oriental or eastern. Sir T. Browne.
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Orientalize
O`ri*en"tal*ize (?), v. t. [imp. & p. p. Orientalized (?); p. pr. & vb. n. Orientalizing (?).] to render Oriental; to cause to conform to Oriental manners or conditions.
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Orientate
O"ri*en*tate (?), v. t. [imp. & p. p. Orientated (?); p. pr. & vb. n. Orientating.] [From Orient.]
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1. To place or turn toward the east; to cause to assume an easterly direction, or to veer eastward.
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2. To arrange in order; to dispose or place (a body) so as to show its relation to other bodies, or the relation of its parts among themselves.
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A crystal is orientated when placed in its proper position so as to exhibit its symmetry. E. S. Dana.
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3. Same as orient{2}.
[PJC]

Orientate
O"ri*en*tate, v. i. To move or turn toward the east; to veer from the north or south toward the east.
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oriented
orientated
orientated oriented adj. 1. Adjusted or aligned to surroundings or circumstances; sometimes used in combination; as, to get oriented on one's first day at a new job.
[WordNet 1.5]

2. headed or intending to head in a certain direction; as, college-oriented students. Opposite of unoriented.
Syn. -- directed, minded.
[WordNet 1.5]

orienting
orientating
orientating orienting adj. aligning; positioning; setting into proper alignment.
[WordNet 1.5 +PJC]

Orientation
O`ri*en*ta"tion (?), n. [Cf. F. orientation.]
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1. The act or process of orientating; determination of the points of the compass, or the east point, in taking bearings.
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2. The tendency of a revolving body, when suspended in a certain way, to bring the axis of rotation into parallelism with the earth's axis.
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3. An aspect or fronting to the east; especially (Arch.), the placing of a church so that the chancel, containing the altar toward which the congregation fronts in worship, will be on the east end.
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4. (Fig.): A return to first principles; an orderly arrangement.
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The task of orientation undertaken in this chapter. L. F. Ward.
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Orientness
O"ri*ent*ness (?), n. The quality or state of being orient or bright; splendor. [Obs.] Fuller.
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Orifice
Or"i*fice (?), n. [F., from L. orificium; os, oris, a mouth + facere to make. See Oral, and Fact.] A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound. Shak.
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Etna was bored through the top with a monstrous orifice. Addison.
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Oriflamme
Oriflamb
{ Or"i*flamb, Or"i*flamme } (?), n. [F. oriflamme, OF. oriflambe, LL. auriflamma; L. aurum gold + flamma flame; cf. L. flammula a little banner. So called because it was a flag of red silk, split into many points, and borne on a gilded lance.] 1. The ancient royal standard of France.
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2. A standard or ensign, in battle. “A handkerchief like an oriflamb.” Longfellow.
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And be your oriflamme to-day the helmet of Navarre. Macaulay.
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Origanum
Origan
{ Or"i*gan (?), ‖O*rig"a*num (?), } prop. n. [L. origanum, Gr. &unr_;, &unr_;, prob. fr. 'o`ros, mountain + &unr_; brightness, beauty. Cf. Organy.] (Bot.) A genus of aromatic labiate plants, including the sweet marjoram (Origanum Marjorana) and the wild marjoram (Origanum vulgare). Spenser.
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Origenism
Or"i*gen*ism (?), n. (Eccl. Hist.) The opinions of Origen of Alexandria, who lived in the 3d century, one of the most learned of the Greek Fathers. Prominent in his teaching was the doctrine that all created beings, including Satan, will ultimately be saved.
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Origenist
Or"i*gen*ist, n. A follower of Origen of Alexandria.
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Origin
Or"i*gin (?), n. [F. origine, L. origo, -iginis, fr. oriri to rise, become visible; akin to Gr. 'orny`nai to stir up, rouse, Skr. &rsdot_;, and perh. to E. run.]
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1. The first existence or beginning of anything; the birth.
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This mixed system of opinion and sentiment had its origin in the ancient chivalry. Burke.
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2. That from which anything primarily proceeds; the fountain; the spring; the cause; the occasion.
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3. (Anat.) The point of attachment or end of a muscle which is fixed during contraction; -- in contradistinction to insertion.
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Origin of coordinate axes (Math.), the point where the axes intersect. See Note under Ordinate.
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Syn. -- Commencement; rise; source; spring; fountain; derivation; cause; root; foundation. -- Origin, Source. Origin denotes the rise or commencement of a thing; source presents itself under the image of a fountain flowing forth in a continuous stream of influences. The origin of moral evil has been much disputed, but no one can doubt that it is the source of most of the calamities of our race.
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I think he would have set out just as he did, with the origin of ideas -- the proper starting point of a grammarian, who is to treat of their signs. Tooke.
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Famous Greece,
That source of art and cultivated thought
Which they to Rome, and Romans hither, brought.
Waller.
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Originable
O*rig"i*na*ble (?), a. Capable of being originated.
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Original
O*rig"i*nal (?), a. [F. original, L. originalis.]
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1. Pertaining to the origin or beginning; preceding all others; first in order; primitive; primary; pristine; as, the original state of man; the original laws of a country; the original inventor of a process.
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His form had yet not lost
All her original brightness.
Milton.
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2. Not copied, imitated, or translated; new; fresh; genuine; as, an original thought; an original process; the original text of Scripture.
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3. Having the power to suggest new thoughts or combinations of thought; inventive; as, an original genius.
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4. Before unused or unknown; new; as, a book full of original matter.
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Original sin (Theol.), the first sin of Adam, as related to its consequences to his descendants of the human race; -- called also total depravity. See Calvinism.
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Original
O*rig"i*nal, n. [Cf. F. original.]
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1. Origin; commencement; source.
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It hath it original from much grief. Shak.
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And spangled heavens, a shining frame,
Their great Original proclaim.
Addison.
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2. That which precedes all others of its class; archetype; first copy; hence, an original work of art, manuscript, text, and the like, as distinguished from a copy, translation, etc.
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The Scriptures may be now read in their own original. Milton.
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3. An original thinker or writer; an originator. [R.]
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Men who are bad at copying, yet are good originals. C. G. Leland.
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4. A person of marked eccentricity. [Colloq.]
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5. (Zool. & Bot.) The natural or wild species from which a domesticated or cultivated variety has been derived; as, the wolf is thought by some to be the original of the dog, the blackthorn the original of the plum.
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Originalist
O*rig"i*nal*ist, n. One who is original. [R.]
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Originality
O*rig`i*nal"i*ty (?), n. [Cf. F. originalité.] 1. The quality or state of being original. Macaulay.
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2. Ability to create new and original ideas, works of art, theories, etc.; ability to express oneself in an original manner; creativity; -- of people.
[PJC]

Originally
O*rig"i*nal*ly (?), adv. 1. In the original time, or in an original manner; primarily; from the beginning or origin; not by derivation, or imitation.
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God is originally holy in himself. Bp. Pearson.
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2. At first; at the origin; at the time of formation or costruction; as, a book originally written by another hand.Originally a half length [portrait].” Walpole.
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Originalness
O*rig"i*nal*ness (?), n. The quality of being original; originality. [R.] Johnson.
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Originant
O*rig"i*nant (?), a. Originating; original. [R.]
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An absolutely originant act of self will. Prof. Shedd.
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Originary
O*rig"i*na*ry (?), a. [L. originarius: cf. F. originaire.] 1. Causing existence; productive. [R.]
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The production of animals, in the originary way, requires a certain degree of warmth. Cheyne.
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2. Primitive; primary; original. [R.]
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The grand originary right of all rights. Hickok.
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Originate
O*rig"i*nate (?), v. t. [imp. & p. p. Originated (?); p. pr. & vb. n. Originating.] [From Origin.] To give an origin or beginning to; to cause to be; to bring into existence; to produce as new.
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A decomposition of the whole civil and political mass, for the purpose of originating a new civil order. Burke.
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Originate
O*rig"i*nate, v. i. To take first existence; to have origin or beginning; to begin to exist or act; as, the scheme originated with the governor and council.
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Origination
O*rig`i*na"tion (?), n. [L. originatio.]
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1. The act or process of bringing or coming into existence; first production. “The origination of the universe.” Keill.
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What comes from spirit is a spontaneous origination. Hickok.
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2. Mode of production, or bringing into being.
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This eruca is propagated by animal parents, to wit, butterflies, after the common origination of all caterpillars. Ray.
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Originative
O*rig"i*na*tive (?), a. Having power, or tending, to originate, or bring into existence; originating. H. Bushnell. -- O*rig"i*na*tive*ly, adv.
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Originator
O*rig"i*na`tor (?), n. One who originates.
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Orillon
O*ril"lon (?), n. [F., lit., a little ear, from oreille an ear, fr. L. oricula, auricula, dim. of auris an ear. See Ear.] (Fort.) A semicircular projection made at the shoulder of a bastion for the purpose of covering the retired flank, -- found in old fortresses.
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Oriol
O"ri*ol (?), n. See Oriel.
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Oriole
O"ri*ole (?), n. [OF. oriol, oriouz, orieus, F. loriot (for l'oriol), fr. L. aureolus golden, dim. of aureus golden, fr. aurum gold. Cf. Aureole, Oriel, Loriot.] (Zool.) (a) Any one of various species of Old World singing birds of the family Oriolidae. They are usually conspicuously colored with yellow and black. The European or golden oriole (Oriolus galbula, or Oriolus oriolus) has a very musical flutelike note. (b) In America, any one of several species of the genus Icterus, belonging to the family Icteridae. See Baltimore oriole, and Orchard oriole, under Orchard.
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Crested oriole. (Zool.) See Cassican.
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Oriolidae
Oriolidae prop. n. A natural family of Old World orioles.
Syn. -- family Oriolidae.
[WordNet 1.5]

Oriolus
Oriolus prop. n. The type genus of the Oriolidae.
Syn. -- genus Oriolus.
[WordNet 1.5]

Orion
O*ri"on (&ouptack_;*rī"&obreve_;n), n. [L., fr. Gr. 'Wri`wn, orig., a celebrated hunter in the oldest Greek mythology, after whom this constellation was named.] (Astron.) A large and bright constellation on the equator, between the stars Aldebaran and Sirius. It contains a remarkable nebula visible to the naked eye.
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The flaming glories of Orion's belt. E. Everett.
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Oriskany
O*ris"ka*ny (?), a. [From Oriskany, in New York.] (Geol.) Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age.
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Oriskany period, a subdivision of the American Paleozoic system intermediate or transitional in character between the Silurian and Devonian ages. See Chart of Geology.
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Orismological
O*ris`mo*log"ic*al (&ouptack_;*r&ibreve_;s`m&obreve_;*l&ouptack_;j"&ibreve_;*k&aitalic_;l), a. (Nat. Hist.) Of or pertaining to orismology.
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Orismology
O`ris*mol"o*gy (ō`r&ibreve_;s*m&obreve_;l"&ouptack_;*j&ybreve_;), n. [Gr. "orismo`s a marking out by boundaries, the definition of a word + -logy. See Horizon.] That department of natural history which treats of technical terms; the science of defining technical terms.
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Orison
Or"i*son (?), n. [OF. orison, oreson, oreison, F. oraison, fr. L. oratio speech, prayer. See Oration.] A prayer; a supplication. [Poetic] Chaucer. Shak.
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Lowly they bowed, adoring, and began
Their orisons, each morning duly paid.
Milton.
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Orisont
Or"i*sont (?), n. Horizon. [Obs.] Chaucer.
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Ork
Ork (?), n. (Zool. & Mythol.) See Orc.
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Orkneyan
Ork"ney*an (?), prop. a. Of or pertaining to the Orkney islands.Orkneyan skerries.” Longfellow.
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Orle
Orle (?), n. [F. orle an orle, a fillet, fr. LL. orla border, dim. of L. ora border, margin.]
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1. (Her.) A bearing, in the form of a fillet, round the shield, within, but at some distance from, the border.
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2. (Her.) The wreath, or chaplet, surmounting or encircling the helmet of a knight and bearing the crest.
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In orle, round the escutcheon, leaving the middle of the field vacant, or occupied by something else; -- said of bearings arranged on the shield in the form of an orle.
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Orleans
Or"le*ans (?), n. [So called from the city of Orléans, in France.] 1. A cloth made of worsted and cotton, -- used for wearing apparel.
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2. A variety of the plum. See under Plum. [Eng.]
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Orlo
Or"lo (?), n. [Sp.] (Mus.) A wind instrument of music in use among the Spaniards.
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Orlop
Or"lop (?), n. [D. overloop the upper deck, lit., a running over or overflowing, fr. overloopen to run over. See Over, and Leap, and cf. Overloop.] (Naut.) The lowest deck of a vessel, esp. of a ship of war, consisting of a platform laid over the beams in the hold, on which the cables are coiled.
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Ahura-Mazda
Ormuzd
Ormazd
{ Or"mazd (?), Or"muzd or A`hu*ra-Maz"da }, n. [Zend Ahuramazda.] (Zoroastrianism) The supreme deity, the embodiment of the principle of good, creator of the world, source of light, and guardian of mankind. He is the opponent of Ahriman, the spirit of evil, both being sprung from Eternity, or, according to another version, Ahriman being the offspring of a moment of doubt on the part of Ormazd. Ormazd is attended by angels and archangels. He is represented as a bearded man inclosed in a winged circle, a conception probably derived from the Assyrian representations of Ashur.
[Webster 1913 Suppl.]

Ormer
Or"mer (ôr"m&etilde_;r), n. (Zool.) An abalone.
[1913 Webster]

ormolu
or`mo*lu" (ôr`m&ouptack_;*l&usuml_;"), n. [F. or moulu; or gold (L. aurum) + moulu, p. p. of moudre to grind, to mill, L. molere. See Aureate, and Mill.] A variety of brass made to resemble gold by the use of less zinc and more copper in its composition than ordinary brass contains. Its golden color is often heightened by means of lacquer of some sort, or by use of acids. Called also mosaic gold.
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ormolu varnish, a varnish applied to metals, as brass, to give the appearance of gold.
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Ormosia
Ormosia prop. n. A genus of tropical shrubs and trees having usually odd-pinnate leaves with large leaflets and pink to reddish wood.
Syn. -- genus Ormosia.
[WordNet 1.5]

Ormuzd
Or"muzd (ôr"mŭzd), prop. n. [Zend Ahuramazda.] The good principle, or being, of the ancient Persian religion; same as Ormazd. See also Ahriman.
[1913 Webster +PJC]

orn
orn (ôrn), v. t. To ornament; to adorn. [Obs.] Joye.
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ornament
or"na*ment (?), n. [OE. ornement, F. ornement, fr. L. ornamentum, fr. ornare to adorn.] That which embellishes or adorns; that which adds grace or beauty; embellishment; decoration; adornment.
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The ornament of a meek and quiet spirit. 1 Pet. iii. 4.
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Like that long-buried body of the king
Found lying with his urns and ornaments.
Tennyson.
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ornament
or"na*ment (?), v. t. [imp. & p. p. Ornamented; p. pr. & vb. n. Ornamenting.] To adorn; to deck; to embellish; to beautify; as, to ornament a room, or a city.
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Syn. -- See Adorn.
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ornamental
or`na*men"tal (?), a. [Cf. F. ornemental.] Serving to ornament; characterized by ornament; beautifying; embellishing.
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Some think it most ornamental to wear their bracelets on their wrists; others, about their ankles. Sir T. Browne.
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ornamentally
or`na*men"tal*ly, adv. By way of ornament.
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Ornamentation
Or`na*men*ta"tion (?), n. 1. The act or art of ornamenting, or the state of being ornamented.
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2. That which ornaments. C. Kingsley.
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3. The ornaments embellishing an object, collectively; as, each room of the palace had a strikingly different ornamentation.
[1913 Webster +PJC]

Ornamenter
Or"na*ment*er (?), n. One who ornaments; a decorator.
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Ornate
Or*nate" (?), a. [L. ornatus, p. p. of ornare to adorn.] 1. Elaborately adorned or decorated; beautifully sumptuous. “So bedecked, ornate, and gay.” Milton.
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2. Finely finished, as a style of composition.
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A graceful and ornate rhetoric. Milton.
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Ornate
Or*nate", v. t. To adorn; to honor. [R.]
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They may ornate and sanctify the name of God. Latimer.
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Ornately
Or*nate"ly, adv. In an ornate manner. Sir T. More.
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Ornateness
Or*nate"ness, n. The quality of being ornate.
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Ornature
Or"na*ture (?), n. [L. ornatura.] Decoration; ornamentation. [R.] Holinshed.
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Ornithic
Or*nith"ic (?), a. [Gr. 'o`rnis, 'o`rniqos, a bird.] Of or pertaining to birds; as, ornithic fossils. Owen.
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Ornithichnite
Or`nith*ich"nite (?), n. [Ornitho- + Gr. 'i`chnos track.] (Paleon.) The footmark of a bird occurring in strata of stone. Hitchcock.
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Ornithichnology
Or`nith*ich*nol"o*gy (?), n. [Ornitho- + ichnology.] (Paleon.) The branch of science which treats of ornithichnites. Hitchcock.
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Ornitho-
Ornitho-. [Cf. Ern.] A combining form fr. Gr. 'o`rnis, 'o`rniqos, a bird.
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Ornithodelphia
Or*ni`tho*del"phi*a (?), n. pl. [NL., fr. Gr. 'o`rnis + delfy`s the womb.] Same as Monotremata. -- Or`ni*tho*del"phid (#), a.
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Ornithoidichnite
Or`ni*thoid*ich"nite (?), n. [Ornitho- + -oid + Gr. 'i`chnos footstep, track.] (Paleon.) A fossil track resembling that of a bird. Hitchcock.
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Ornitholite
Or*nith"o*lite (?), n. [Ornitho- + -lite.] (Paleon.) (a) The fossil remains of a bird. (b) A stone of various colors bearing the figures of birds.
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Ornithological
Ornithologic
{ Or`ni*tho*log"ic (?), Or`ni*tho*log"ic*al (?), } a. [Cf. F. ornithologique.] Of or pertaining to ornithology; as, her ornithological interests.
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Ornithologist
Or`ni*thol"o*gist (?), n. [Cf. F. ornithologiste.] One skilled in ornithology; a student of ornithology; one who describes birds.
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Ornithology
Or`ni*thol"o*gy (?), n. [Ornitho- + -logy: cf. F. ornithologie.] 1. That branch of Zoology which treats of the natural history of birds and their classification.
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2. A treatise or book on this science.
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Ornithomancy
Or*nith"o*man`cy (?), n. [Gr. &unr_;; 'o`rnis, 'o`rniqos, a bird + &unr_; divination: cf. F. ornithomancie.] Divination by means of birds, their flight, etc.
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Ornithomancy grew into an elaborate science. De Quincey.
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Ornithon
Or*ni"thon (?), n. [L., fr. Gr. &unr_;, fr. 'o`rnis, 'o`rniqos, a bird.] An aviary; a poultry house. Weale.
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Ornithopappi
Or*ni`tho*pap"pi (?), prop. n. pl. [NL., from Gr. 'o`rnis a bird + &unr_; an ancestor.] (Zool.) An extinct order of birds. It includes only the Archaeopteryx.
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Ornithopoda
Or`ni*thop"o*da (?), prop. n. pl. [NL. See Ornitho-, and -poda.] (Paleon.) An order of herbivorous dinosaurs with birdlike characteristics in the skeleton, esp. in the pelvis and hind legs, which in some genera had only three functional toes, and supported the body in walking as in Iguanodon. See Illust. in Appendix.
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Ornithorhynchidae
Ornithorhynchidae prop. n. The natural family of monotremes including the platypus (duckbill) (Ornithorhyncus anatinus).
Syn. -- family Ornithorhynchidae.
[WordNet 1.5]

Ornithorhynchus
Or`ni*tho*rhyn"chus (?), prop. n. [NL., fr. Gr. 'o`rnis, 'o`rniqos, a bird + &unr_; snout, beak.] (Zool.) A genus of monotremes including the platypus (Ornithorhyncus anatinus). See Duck mole, under Duck.
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Ornithosauria
Or*ni`tho*sau"ri*a (?), prop. n. pl. [NL. See Ornitho-, and Sauria.] (Paleon.) An order of extinct flying reptiles; -- called also Pterosauria.
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Ornithoscelida
Or*ni`tho*scel"i*da (?), n. pl. [NL., fr. Gr. 'o`rnis, 'o`rniqos, a bird + &unr_; a leg.] (Zool.) A group of extinct Reptilia, intermediate in structure (especially with regard to the pelvis) between reptiles and birds. -- Or`ni*tho*scel"i*dan (#), a.
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Ornithoscopy
Or`ni*thos"co*py (?), n. [Ornitho- + -scopy: cf. Gr. &unr_; divination from birds.] Observation of birds and their habits. [R.] De Quincey.
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Ornithotomical
Or`ni*tho*tom"ic*al (?), a. Of or pertaining to ornithotomy.
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Ornithotomist
Or`ni*thot"o*mist (?), n. One who is skilled in ornithotomy.
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Ornithotomy
Or`ni*thot"o*my (?), n. [Gr. 'o`rnis, 'o`rniqos, a bird + te`mnein to cut.] The anatomy or dissection of birds.
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Orograph
Or"o*graph (?), n. [Gr. 'o`ros mountain + -graph.] (Surveying) A machine for use in making topographical maps. It is operated by being pushed across country, and not only records distances, like the perambulator, but also elevations.
[Webster 1913 Suppl.]

Orographical
Orographic
{ Or`o*graph"ic (?), Or`o*graph"ic*al (?), } a. Of or pertaining to orography.
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Orography
O*rog"ra*phy (?), n. [Gr. 'o`ros, a mountain + -graphy.] That branch of science which treats of mountains and mountain systems; orology; as, the orography of Western Europe.
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Oroheliograph
Or`o*he"li*o*graph (?), n. [Gr. 'o`ros mountain + helio- + -graph.] (Photog.) A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.
[Webster 1913 Suppl.]

Orohippus
Or`o*hip"pus (?), n. [NL., fr. Gr. 'o`ros, mountain (referring to the Rocky Mountain region) + "i`ppos horse.] (Paleon.) A genus of American Eocene mammals allied to the horse, but having four toes in front and three behind.
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Oroide
O"roide (?), n. [F. or gold (L. aurum) + Gr. e'i^dos form.] An alloy, chiefly of copper and zinc or tin, resembling gold in color and brilliancy. [Written also oreide.]
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Orological
Or`o*log"ic*al (?), a. [Cf. F. orologique.] Of or pertaining to orology.
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Orologist
O*rol"o*gist (?), n. One versed in orology.
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Orology
O*rol"o*gy (?), n. [Gr. 'o`ros mountain + -logy: cf. F. orologie.] The science or description of mountains.
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Orometer
O*rom"e*ter (?), n. [Gr. 'o`ros mountain + -meter.] (Meteor.) An aneroid barometer having a second scale that gives the approximate elevation above sea level of the place where the observation is made.
[Webster 1913 Suppl.]

Orotund
O"ro*tund` (?), a. [L. os, oris, the mouth + rotundus round, smooth.] Characterized by fullness, clearness, strength, and smoothness; ringing and musical; -- said of the voice or manner of utterance. -- n. The orotund voice or utterance Rush.
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Orotundity
O`ro*tun"di*ty (?), n. The orotund mode of intonation.
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Orphaline
Or"pha*line (?), n. See Orpheline. [Obs.]
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Orphan
Or"phan (?), n. [L. orphanus, Gr. &unr_;, akin to L. orbus. Cf. Orb a blank window.] A child bereaved of both father and mother; sometimes, also, a child who has but one parent living.
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Orphans' court (Law), a court in some of the States of the Union, having jurisdiction over the estates and persons of orphans or other wards. Bouvier.
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Orphan
Or"phan, a. Bereaved of parents, or (sometimes) of one parent.
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Orphan
Or"phan, v. t. [imp. & p. p. Orphaned (?); p. pr. & vb. n. Orphaning.] To cause to become an orphan; to deprive of parents. Young.
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Orphanage
Or"phan*age (?), n. 1. The state of being an orphan; orphanhood; orphans, collectively.
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2. An institution or asylum for the care of orphans.
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Orphancy
Or"phan*cy (?), n. Orphanhood. Sir P. Sidney.
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Orphanet
Or"phan*et (?), n. A little orphan. Drayton.
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Orphanhood
Or"phan*hood (?), n. The state or condition of being an orphan; orphanage.
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Orphanism
Or"phan*ism (?), n. Orphanhood. [R.]
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Orphanotrophism
Or`phan*ot"ro*phism (?), n. The care and support of orphans. [R.] Cotton Mather (1711).
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Orphanotrophy
Or`phan*ot"ro*phy (?), n. [L. orphanotrophium, Gr. &unr_;; &unr_; an orphan + &unr_; to feed, bring up.]
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1. A hospital for orphans. [R.] A. Chalmers.
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2. The act of supporting orphans. [R.]
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Orpharion
Or*pha"ri*on (?), n. (Mus.) An old instrument of the lute or cittern kind. [Spelt also orpheoreon.]
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Orphean
Or*phe"an (?), a. [L. Orphēus, Gr. &unr_;.] Of or pertaining to Orpheus, the mythic poet and musician; as, Orphean strains. Cowper.
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Orpheline
Or"phe*line (?), n. [F. orphelin. See Orphan.] An orphan. [Obs.] Udcll.
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Orpheus
Or"phe*us (?), prop. n. [L. Orpheus, Gr. &unr_;.] (Gr. Myth.) The famous mythic Thracian poet, son of the Muse Calliope, and husband of Eurydice. He is reputed to have had power to entrance beasts and inanimate objects by the music of his lyre.
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Orphic
Or"phic (?), prop. a. [L. Orphicus, Gr. &unr_;.] Pertaining to Orpheus; Orphean; as, Orphic hymns.
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Orphrey
Or"phrey (?), n. [See Orfrays.] A band of rich embroidery, wholly or in part of gold, affixed to vestments, especially those of ecclesiastics. Pugin.
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Orpiment
Or"pi*ment (?), n. [F., fr. L. auripigmentum; aurum gold + pigmentum pigment. Cf. Aureate, Pigment, Orpin, Orpine.] (Chem.) Arsenic sesquisulphide, produced artificially as an amorphous lemon-yellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing.
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Our orpiment and sublimed mercurie. Chaucer.
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Red orpiment, realgar; the red sulphide of arsenic. -- Yellow orpiment, king's yellow.
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Orpin
Or"pin, n. [F., orpiment, also, the plant orpine. See Orpiment.] 1. A yellow pigment of various degrees of intensity, approaching also to red.
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2. (Bot.) The orpine.
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orpine
or"pine (?), n. [F. orpin the genus of plants which includes orpine; -- so called from the yellow blossoms of a common species (Sedum acre). See Orpiment.] (Bot.) A low plant with fleshy leaves (Sedum telephium), having clusters of purple flowers. It is found on dry, sandy places, and on old walls, in England, and has become naturalized in America. Called also stonecrop, and live-forever. [Written also orpin.]
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Orrach
Or"rach (?), n. See Orach.
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Orrery
Or"re*ry (?), n.; pl. Orreries (#). [So named in honor of the Earl of Orrery.] An apparatus which illustrates, by the revolution of balls moved by wheelwork, the relative size, periodic motions, positions, orbits, etc., of bodies in the solar system.
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Orris
Or"ris (?), n. [Prob. corrupted from It. ireos iris. See Iris.] (Bot.) A plant of the genus Iris (Iris Florentina); a kind of flower-de-luce. Its rootstock has an odor resembling that of violets.
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Orris pea (Med.), an issue pea made from orris root. -- Orris root, the fragrant rootstock of the orris.
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Orris
Or"ris (?), n. 1. [Contr. from orfrays, or from arras.] A sort of gold or silver lace. Johnson.
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2. A peculiar pattern in which gold lace or silver lace is worked; especially, one in which the edges are ornamented with conical figures placed at equal distances, with spots between them.
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Orsedue
Orsedew
{ Orse"dew (?), Or"se*due (?), } n. Leaf metal of bronze; Dutch metal. See under Dutch.
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Orseille
Or`seille" (?), n. [F.] See Archil.
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Orsellic
Or*sel"lic (?), a. [From F. orseille archil. See Archil.] (Chem.) Pertaining to, or designating, an acid found in certain lichens, and called also lecanoric acid. [Formerly written also orseillic.]
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Orsellinic
Or`sel*lin"ic (?), a. (Chem.) Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.
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Ort
Ort (ôrt), n.; pl. Orts (ôrts). [Akin to LG. ort, ortels, remnants of food, refuse, OFries. ort, OD. oorete, ooraete; prob. from the same prefix as in E. ordeal + a word akin to eat.] A morsel left at a meal; a fragment; refuse; -- commonly used in the plural. Milton.
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Let him have time a beggar's orts to crave. Shak.
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Ortalidian
Or`ta*lid"i*an (?), n. (Zool.) Any one of numerous small two-winged flies of the family Ortalidae. The larvae of many of these flies live in fruit; those of others produce galls on various plants.
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Orthid
Or"thid (?), n. (Zool.) A brachiopod shell of the genus Orthis, and allied genera, of the family Orthidae.
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Orthis
Or"this (ôr"th&ibreve_;s), prop. n. [NL., fr. Gr. 'orqo`s straight.] (Zool.) An extinct genus of Brachiopoda, abundant in the Paleozoic rocks.
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Orthite
Or"thite (?), n. [Gr. 'orqo`s straight.] (Min.) A variety of allanite occurring in slender prismatic crystals.
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Ortho-
Or"tho- (ôr"th&ouptack_;-) pref. [Gr. 'orqo`s straight; akin to Skr. ūrdhva upright, v&rsdot_;dh to grow, to cause to grow.]
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1. A combining form signifying straight, right, upright, correct, regular; as, orthodromy, orthodiagonal, orthodox, orthographic.
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2. (Chem.) A combining form (also used adjectively), designating: (a) (Inorganic Chem.) The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid. Cf. Normal. (b) (Organic Chem.) Connection with, or affinity to, one variety of isomerism, characteristic of the benzene compounds; -- contrasted with meta- or para-; as, the ortho position; hence, designating any substance showing such isomerism; as, an ortho compound.
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&hand_; In the graphic representation of the benzene nucleus (see Benzene nucleus, under Benzene), provisionally adopted, any substance exhibiting double substitution in adjacent and contiguous carbon atoms, as 1 & 2, 3 & 4, 4 & 5, etc., is designated by ortho-; as, orthoxylene; any substance exhibiting substitution of two carbon atoms with one intervening, as 1 & 3, 2 & 4, 3 & 5, 4 & 6, etc., by meta-; as, resorcin or metaxylene; any substance exhibiting substitution in opposite parts, as 1 & 4, 2 & 5, 3 & 6, by para-; as, hydroquinone or paraxylene.
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Orthocarbonic
Or`tho*car*bon"ic (?), a. [Ortho- + carbonic.] (Chem.) Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.
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Orthocenter
Or`tho*cen"ter (?), n. [Ortho- + center.] (Geom.) That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.
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Orthoceras
Or*thoc"e*ras (?), n. [NL., fr. Gr. 'orqo`s straight + ke`ras a horn.] (Paleon.) An extinct genus of Paleozoic Cephalopoda, having a long, straight, conical shell. The interior is divided into numerous chambers by transverse septa.
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Orthoceratite
Or`tho*cer"a*tite (?), n. [Ortho- + Gr. &unr_;, &unr_;, a horn.] (Zool.) An orthoceras; also, any fossil shell allied to Orthoceras.
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Orthoclase
Or"tho*clase (?), n. [Ortho- + Gr. &unr_; to break.] (Min.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.
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Orthoclastic
Or`tho*clas"tic (?), a. (Crystallog.) Breaking in directions at right angles to each other; -- said of the monoclinic feldspars.
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Orthodiagonal
Or`tho*di*ag"o*nal (?), n. [Ortho- + diagonal.] (Crystallog.) The diagonal or lateral axis in a monoclinic crystal which is at right angles with the vertical axis.
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Orthodome
Or"tho*dome (?), n. [Ortho- + dome.] (Crystallog.) See the Note under Dome, 4.
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orthodontia
orthodontia n. (Med.) The treatment of the teeth so as to make the teeth align properly within the mouth, usually involving the wearing of braces and sometimes oral surgery.
[PJC]

orthodontic
orthodontic a. (Med.) Of or pertaining to orthodontics or orthodontia.
[PJC]

orthodontics
orthodontics n. (Med.) A branch of dentistry specializing in the treatment of the teeth so as to make the teeth align properly within the mouth; it usually involves fitting a patient with braces and sometimes oral surgery.
[PJC]

orthodontist
orthodontist n. a dentist specializing in the prevention or correction of irregularities of the teeth; one specializing in orthodontics.
[WordNet 1.5]

Orthodox
Or"tho*dox (?), a. [L. orthodoxus, Gr. 'orqo`doxos; 'orqo`s right, true + do`xa opinion, dokei^n to think, seem; cf. F. orthodoxe. See Ortho-, Dogma.] 1. Sound in opinion or doctrine, especially in religious doctrine; hence, holding the Christian faith; believing the doctrines taught in the Scriptures; -- opposed to heretical and heterodox; as, an orthodox Christian.
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2. According or congruous with the doctrines of Scripture, the creed of a church, the decree of a council, or the like; as, an orthodox opinion, book, etc.
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3. Adhering to generally approved doctrine or practices; conventional. Opposed to unorthodox.
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He saluted me on both cheeks in the orthodox manner. H. R. Haweis.
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4. Of or pertaining to the churches of the Eastern Christian rite, especially the Greek Orthodox or Russian Orthodox churches, which do not recognize the supremacy of the Pope of Rome in matters of faith.
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&hand_; The term orthodox differs in its use among the various Christian communions. The Greek Church styles itself the “Holy Orthodox Apostolic Church,” regarding all other bodies of Christians as more or less heterodox. The Roman Catholic Church regards the Protestant churches as heterodox in many points. In the United States the term orthodox is frequently used with reference to divergent views on the doctrine of the Trinity. Thus it has been common to speak of the Trinitarian Congregational churches in distinction from the Unitarian, as Orthodox.` The name is also applied to the conservative, in distinction from the “liberal”, or Hicksite, body in the Society of Friends. Schaff-Herzog Encyc.
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Orthodoxal
Or"tho*dox`al (ôr"th&ouptack_;*d&obreve_;ks`&aitalic_;l), a. Pertaining to, or evincing, orthodoxy; orthodox. [R.] Milton.
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Orthodoxality
Or`tho*dox*al"i*ty (ôr`th&ouptack_;*d&obreve_;ks*ăl"&ibreve_;t&ybreve_;), n. Orthodoxness. [R.]
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Orthodoxally
Or"tho*dox`al*ly (?), adv. Orthodoxly. [R.] Milton
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Orthodoxastical
Or`tho*dox*as"tic*al (?), a. Orthodox. [Obs.]
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Orthodoxical
Or`tho*dox"ic*al (?), a. Pertaining to, or evincing, orthodoxy; orthodox.
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Orthodoxly
Or"tho*dox`ly (?), adv. In an orthodox manner; with soundness of faith. Sir W. Hamilton.
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Orthodoxness
Or"tho*dox`ness, n. The quality or state of being orthodox; orthodoxy. Waterland.
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Orthodoxy
Or"tho*dox`y (?), n. [Gr. &unr_;: cf. F. orthodoxie. See Orthodox.] 1. Soundness of faith; a belief in the doctrines taught in the Scriptures, or in some established standard of faith; -- opposed to heterodoxy or to heresy.
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Basil himself bears full and clear testimony to Gregory's orthodoxy. Waterland.
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2. Consonance to genuine Scriptural doctrines; -- said of moral doctrines and beliefs; as, the orthodoxy of a creed.
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3. By extension, said of any generally accepted doctrine or belief; the orthodox practice or belief.
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Orthodromic
Or`tho*drom"ic (?), a. [Ortho- + Gr. &unr_; to run.] Of or pertaining to orthodromy.
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Orthodromics
Or`tho*drom"ics (?), n. The art of sailing in a direct course, or on the arc of a great circle, which is the shortest distance between any two points on the surface of the globe; great-circle sailing; orthodromy.
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Orthodromy
Or"tho*drom`y (ôr"th&ouptack_;*dr&obreve_;m`&ybreve_;; 277), n. [Cf. F. orthodromie.] The act or art of sailing on a great circle.
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Orthoepical
Orthoepic
{ Or`tho*ep"ic (?), Or`tho*ep"ic*al (?), } a. Of or pertaining to orthoepy, or correct pronunciation. -- Or`tho*ep"ic*al*ly, adv.
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orthoepist
or"tho*e*pist (ôr"th&ouptack_;*&euptack_;*p&ibreve_;st), n. One who is skilled in orthoepy.
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orthoepy
or"tho*e*py (ôr"th&ouptack_;*&euptack_;*p&ybreve_;; 277), n. [Gr. 'orqoe`peia; 'orqo`s right + 'e`pos a word: cf. F. orthoépie. See Ortho-, and Epic.] The art of uttering words correctly; a correct pronunciation of words; also, mode of pronunciation.
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orthogamy
or*thog"a*my (?), n. [Ortho- + Gr. &unr_; marriage.] (Bot.) Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; -- opposed to heterogamy.
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Orthognathic
Or`thog*nath"ic (?), a. Orthognathous.
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Orthognathism
Or*thog"na*thism (?), n. (Anat.) The quality or state of being orthognathous. Huxley.
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Orthognathous
Or*thog"na*thous (?), a. [Ortho- + Gr. gna`qos the jaw.] (Anat.) Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to prognathous. See Gnathic index, under Gnathic.
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Orthogon
Or"tho*gon (?), n. [Ortho- + Gr. gwni`a angle: cf. F. orthogone, a.] (Geom.) A rectangular figure.
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Orthogonal
Or*thog"o*nal (?), a. [Cf. F. orthogonal.] Right-angled; rectangular; as, an orthogonal intersection of one curve with another.
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Orthogonal projection. See under Orthographic.
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Orthogonally
Or*thog"o*nal*ly, adv. Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.
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Orthograph
Or"tho*graph (?), n. [Ortho- + -graph.] (Arch.) An orthographic projection, sometimes partly in section, esp. of a building.
[Webster 1913 Suppl.]

Orthographer
Or*thog"ra*pher (?), n. One versed in orthography; one who spells words correctly.
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Orthographical
Orthographic
{ Or`tho*graph"ic (?), Or`tho*graph"ic*al (?), } a. [Cf. F. orthographique, L. orthographus, Gr. &unr_;.] 1. Of or pertaining to orthography, or right spelling; also, correct in spelling; as, orthographical rules; the letter was orthographic.
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2. (Geom.) Of or pertaining to right lines or angles.
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Orthographic projection or Orthogonal projection, that projection which is made by drawing lines, from every point to be projected, perpendicular to the plane of projection. Such a projection of the sphere represents its circles as seen in perspective by an eye supposed to be placed at an infinite distance, the plane of projection passing through the center of the sphere perpendicularly to the line of sight.
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Orthographically
Or`tho*graph"ic*al*ly, adv. In an orthographical manner: (a) according to the rules of proper spelling; (b) according to orthographic projection.
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Orthographist
Or*thog"ra*phist (?), n. One who spells words correctly; an orthographer.
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Orthographize
Or*thog"ra*phize (?), v. t. To spell correctly or according to usage; to correct in regard to spelling.
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In the coalesced into ith, which modern reaction has orthographized to i' th'. Earle.
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Orthography
Or*thog"ra*phy (?), n. [OE. ortographie, OF. orthographie, L. orthographia, Gr. &unr_;, fr. &unr_; writing correctly; 'orqo`s right + gra`fein to write. See Ortho-, and Graphic.]
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1. The art or practice of writing words with the proper letters, according to standard usage; conventionally correct spelling; also, mode of spelling; as, his orthography is vicious.
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When spelling no longer follows the pronunciation, but is hardened into orthography. Earle.
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2. The part of grammar which treats of the letters, and of the art of spelling words correctly.
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3. A drawing in correct projection, especially an elevation or a vertical section.
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4. The method of spelling the words of a particular language; the system of symbols used for writing a language.
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5. The branch of linguistics concerned with how languages are written.
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Orthology
Or*thol"o*gy (?), n. [Gr. &unr_;; 'orqo`s right + lo`gos speech, description: cf. F. orthologie.] The right description of things. [R.] Fotherby.
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Orthometric
Or`tho*met"ric (?), a. [See Orthometry.] (Crystallog.) Having the axes at right angles to one another; -- said of crystals or crystalline forms.
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Orthometry
Or*thom"e*try (?), n. [Ortho- + -metry.] The art or practice of constructing verses correctly; the laws of correct versification.
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Orthomorphic
Or`tho*mor"phic (?), a. [Ortho- + morphic.] (Geom.) Having the right form.
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Orthomorphic projection, a projection in which the angles in the figure to be projected are equal to the corresponding angles in the projected figure.
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orthopaedics
orthopaedic
orthopaedic, orthopaedics See otrthopedic and orthopedics.
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Orthopedical
Orthopedic
{ Or`tho*ped"ic (?), Or`tho*ped"ic*al (?), } a. (Med.) Of, pertaining to, or employed in, orthopedics; relating to the prevention or cure of deformities of children, or, in general, of the human body at any age; as, orthopedic surgery; an orthopedic hospital.
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orthopedics
orthopedics n. [Ortho- + Gr. &unr_;, &unr_;, a child.] (Med.) The art or practice of correcting disorders or deformities of the spine and joints, or, by extension, any deformities of the human body.
Syn. -- orthopaedics, orthopedy.
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Orthopedist
Or*thop"e*dist (?), n. (Med.) One who prevents, cures, or remedies deformities, esp. in children.
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Orthopedy
Or*thop"e*dy (?), n. [Ortho- + Gr. &unr_;, &unr_;, a child.] (Med.) Same as orthopedics.
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Orthophony
Or*thoph"o*ny (?), n. [Ortho- + Gr. fwnh` voice.] The art of correct articulation; voice training.
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Orthopinacoid
Or`tho*pin"a*coid (?), n. [Ortho- + pinacoid.] (Crystallog.) A name given to the two planes in the monoclinic system which are parallel to the vertical and orthodiagonal axes.
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Orthopny
Orthopnoea
{ ‖Or`thop*nœ"a (?), Or*thop"ny (?), } n. [L. orthopnoea, Gr. &unr_;; 'orqo`sstraight, right + pnei^n to breathe: cf. F. orthopnée.] (Med.) Specifically, a morbid condition in which respiration can be performed only in an erect posture; by extension, any difficulty of breathing.
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orthopod
or"tho*pod (?), n. An orthopedist.
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Orthopoda
Or*thop"o*da (?), prop. n. pl. [NL. See Ortho-, and -poda.] (Zool.) An extinct order of reptiles which stood erect on the hind legs, and resembled birds in the structure of the feet, pelvis, and other parts.
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Orthopraxy
Or"tho*prax`y (?), n. [Gr. 'orqo`s straight + &unr_; a doing.] (Med.) The treatment of deformities in the human body by mechanical appliances.
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Orthoptera
Or*thop"te*ra (?), prop. n. pl. [NL., fr. Gr. 'orqo`s straight + &unr_; feather, wing.] (Zool.) An order of mandibulate insects including grasshoppers, locusts, cockroaches, mantids, crickets, katydids, etc. See Illust. under Insect.
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&hand_; The anterior wings are usually thickened and protect the membranous posterior wings, which are larger and fold longitudinally like a fan. They also have chewing mouth parts. The Orthoptera undergo no metamorphosis.
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Orthopteran
Or*thop"ter*an (?), n. (Zool.) One of the Orthoptera.
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Orthopterous
Or*thop"ter*ous (?), a. (Zool.) Of or pertaining to the Orthoptera.
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Orthorhombic
Or`tho*rhom"bic (?), a. [Ortho- + rhombic.] (Crystallog.) Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
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Orthoscope
Or"tho*scope (?), n. [Ortho- + -scope.] (Physiol.) An instrument designed to show the condition of the superficial portions of the eye.
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Orthoscopic
Or`tho*scop"ic (?), a. (Opt.) Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.
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Orthosilicic
Or`tho*si*lic"ic (?), a. [Ortho- + silicic.] (Chem.) Designating the form of silicic acid having the normal or highest number of hydroxyl groups.
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Orthospermous
Or`tho*sper"mous (?), a. [Ortho- + Gr. &unr_; seed.] (Bot.) Having the seeds straight, as in the fruits of some umbelliferous plants; -- opposed to coelospermous. Darwin.
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Orthostade
Or"tho*stade (?), n. [Gr. &unr_;; 'orqo`s straight + &unr_; to place.] (Anc. Costume) A chiton, or loose, ungirded tunic, falling in straight folds.
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Orthostichy
Or*thos"ti*chy (?), n.; pl. Orthostichies (#). [Ortho- + Gr. sti`chos row.] (Bot.) A longitudinal rank, or row, of leaves along a stem.
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Orthotomic
Or`tho*tom"ic (?), a. [Ortho- + Gr. &unr_; to cleave.] (Geom.) Cutting at right angles.
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Orthotomic circle (Geom.), that circle which cuts three given circles at right angles.
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Orthotomous
Or*thot"o*mous (?), a. (Crystallog.) Having two cleavages at right angles with one another.
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Orthotomy
Or*thot"o*my (?), n. (Geom.) The property of cutting at right angles.
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Orthotone
Or"tho*tone (?), a. [Ortho- + Gr. &unr_; tone, accent.] (Gr. Gram.) Retaining the accent; not enclitic; -- said of certain indefinite pronouns and adverbs when used interrogatively, which, when not so used, are ordinarilly enclitic.
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Orthotropous
Orthotropal
{ Or*thot"ro*pal (?), Or*thot"ro*pous (?), } a. [Ortho- + Gr. &unr_; to turn: cf. F. orthotrope.] (Bot.) Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.
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&hand_; This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum.
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Orthotropic
Or`tho*trop"ic (?), a. [See Orthotropal.] (Bot.) Having the longer axis vertical; -- said of erect stems. Encyc. Brit.
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Orthoxylene
Or`tho*xy"lene (?), n. [Ortho- + xylene.] (Chem.) That variety of xylene (C6H4(CH3)2) in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.
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Ortive
Or"tive (?), a. [L. ortivus, fr. oriri, ortus, to rise: cf. F. ortive.] Of or relating to the time or act of rising; eastern; as, the ortive amplitude of a planet.
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Ortolan
Or"to*lan (?), n. [F., fr. It. ortolano ortolan, gardener, fr. L. hortulanus gardener, fr. hortulus, dim. of hortus garden. So called because it frequents the hedges of gardens. See Yard an inclosure, and cf. Hortulan.] (Zool.) (a) A European singing bird (Emberiza hortulana), about the size of the lark, with black wings. It is esteemed delicious food when fattened. Called also bunting. (b) In England, the wheatear (Saxicola oenanthe). (c) In America, the sora, or Carolina rail (Porzana Carolina). See Sora.
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Ortygan
Or"ty*gan (?), n. [Gr. &unr_;, &unr_;, a quail.] (Zool.) One of several species of East Indian birds of the genera Ortygis and Hemipodius. They resemble quails, but lack the hind toe. See Turnix.
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Orval
Or"val (?), n. [F. orvale.] (Bot.) A kind of sage (Salvia Horminum).
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Orvet
Or`vet" (?), n. [F.] (Zool.) The blindworm.
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Orvietan
Or`vi*e"tan (?), n. [F. orviétan: cf. It. orvietano. So called because invented at Orvieto, in Italy.] A kind of antidote for poisons; a counter poison formerly in vogue. [Obs.]
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-ory
-o*ry (?) suff. [L. -orius: cf. F. -oire.] 1. An adjective suffix meaning of or pertaining to, serving for; as in auditory, pertaining to or serving for hearing; prohibitory, amendatory, etc.
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2. [L. -orium: cf. F. -oire.] A noun suffix denoting that which pertains to, or serves for; as in ambulatory, that which serves for walking; consistory, factory, etc.
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Oryall
Oryal
{ O"ry*al (?), O"ry*all (?) }, n. See Oriel.
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Oryctere
Or"yc*tere (?), n. [Gr. 'orykth`r digger: cf. F. oryctère.] (Zool.) The aard-vark (Orycteropus afer).
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Orycterope
O*ryc"ter*ope (?), n. [Gr. 'orykth`r digger + poy`s foot.] (Zool.) Same as Oryctere (the aardvark, Orycteropus afer).
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Oryctognosy
Or`yc*tog"no*sy (?), n. [Gr. 'orykto`s dug (&unr_; to dig) + gnw^sis knowledge.] Mineralogy. [Obs.] -- Or`yc*tog*nos"tic (#), a. -- Or`yc*tog*nos"tic*al (#), a. [Obs.] -- Or`yc*tog*nos"tic*al*ly (#), adv. [Obs.]
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Oryctography
Or`yc*tog"ra*phy (?), n. [Gr. 'orykto`s dug + -graphy.] Description of fossils. [Obs.]
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Oryctological
Or`yc*to*log"ic*al (?), a. [Cf. F. oryctologique.] Of or pertaining to oryctology. [Obs.]
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Oryctologist
Or`yc*tol"o*gist (?), n. One versed in oryctology. [Obs.]
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Oryctology
Or`yc*tol"o*gy (?), n. [Gr. 'orykto`s dug + -logy: cf. F. oryctologie.] 1. An old name for paleontology.
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2. An old name for mineralogy and geology.
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Oryx
O"ryx (ō"r&ibreve_;ks), prop. n. [NL., from Gr. 'o`ryx a kind of gazelle or antelope.] (Zool.) A genus of African antelopes which includes the gemsbok, the leucoryx, the bisa antelope (Oryx beisa), and the beatrix antelope (Oryx beatrix) of Arabia.
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Oryza
O*ry"za (?), prop. n. [L., rice, Gr. &unr_; See Rice.] (Bot.) A genus of grasses including the rice plant; rice.
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Oryzomys
Oryzomys prop. n. A genus of rodents including the rice rats.
Syn. -- genus Oryzomys.
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Oryzopsis
Oryzopsis prop. n. A genus of grasses incluiding rice grass.
Syn. -- genus Oryzopsis.
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orzo
orzo n. (Cookery) Pasta shaped like pearls of barley; frequently prepared with lamb in Greek cuisine.
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Os
Os (?), n.; pl. Ossa (#). [L.] A bone.
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Os
Os, n.; pl. Ora (#). [L.] A mouth; an opening; an entrance.
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Os
Os (?), n.; pl. Osar (#). [Sw. ås ridge, chain of hills, pl. åsar.] (Geol.) One of the ridges of sand or gravel found in Sweden, etc., supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar.
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Os
Os (?), n. (Chem.) The chemical symbol for the element osmium.
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Osage
Osage prop. n. A tributary of the Missouri River.
Syn. -- Osage River.
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Osage
Osage prop. n. 1. A member of the Osages, a tribe of North American Indians formerly living in western Missouri.
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2. The language of the Osages, a siouxan language.
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Osage orange
O"sage or"ange (?). (Bot.) An ornamental tree of the genus Maclura (Maclura aurantiaca), closely allied to the mulberry (Morus); also, its fruit. The tree was first found in the country of the Osage Indians, and bears a hard and inedible fruit of an orangelike appearance. See Bois d'arc.
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Osages
O*sa"ges (?), n. pl.; sing. Osage (&unr_;). (Ethnol.) A tribe of southern Sioux Indians, now living in the Indian Territory.
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Osanne
O*san"ne (?), n. Hosanna. [Obs.] Chaucer.
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Osar
O"sar (?), n. pl. (Geol.) See 3d Os.
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Oscan
Os"can (?), a. Of or pertaining to the Osci, a primitive people of Campania, a province of ancient Italy. -- n. The language of the Osci.
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Oscillancy
Os"cil*lan*cy (?), n. The state of oscillating; a seesaw kind of motion. [R.]
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Oscillaria
Os`cil*la"ri*a (?), prop. n. [NL., fr. L. oscillare to swing.] (Bot.) A genus of dark green, or purplish black, filamentous, fresh-water algae, the threads of which have an automatic swaying or crawling motion. Called also Oscillatoria.
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Oscillate
Os"cil*late (&obreve_;s"s&ibreve_;l*lāt), v. i. [imp. & p. p. Oscillated (&obreve_;s"s&ibreve_;l*lā`t&ebreve_;d); p. pr. & vb. n. Oscillating (&obreve_;s"s&ibreve_;l*lā`t&ibreve_;ng).] [L. oscillare to swing, fr. oscillum a swing, a little mask or puppet made to be hung from trees and swing in the wind, prob. orig., a little mouth, a dim. from os mouth. See Oral, and cf. Osculate.]
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1. To move backward and forward; to vibrate like a pendulum; to swing; to sway.
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2. To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth.
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The amount of superior families oscillates rather than changes, that is, it fluctuates within fixed limits. De Quincey.
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Oscillating
Os"cil*la`ting (&obreve_;s"s&ibreve_;l*lā`t&ibreve_;ng), a. That oscillates; vibrating; swinging.
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Oscillating current
Os"cil*lat`ing current. (Elec.) A current alternating in direction.
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Oscillating engine, a steam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. Weale.
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Oscillation
Os`cil*la"tion (?), n. [L. oscillatio a swinging.]
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1. The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration.
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2. Fluctuation; variation; change back and forth.
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His mind oscillated, undoubtedly; but the extreme points of the oscillation were not very remote. Macaulay.
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Axis of oscillation, Center of oscillation. See under Axis, and Center.
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Oscillative
Os"cil*la*tive (?), a. Tending to oscillate; vibratory. [R.] I. Taylor.
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oscillator
os"cil*la`tor (&obreve_;s"s&ibreve_;l*lā`t&etilde_;r), n. 1. One that oscillates; specif.: (Electronics) Any device or circuit for producing electric oscillations, whether of current or voltage; esp., an apparatus for generating electric waves in a system of wireless telegraphy. Oscillators are essential components of radio transmission devices and digital computers, as well as many other types of electronic device. In computers the oscillator provides the voltage impulses which permit information bits to be transferred between parts of the computer in a defined sequence.
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2. (Mech.) An instrument for measuring rigidity by the torsional oscillations of a weighted wire.
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Oscillatoria
Os`cil*la*to"ri*a (?), n. pl. [NL. See Oscillatory.] (Bot.) Same as Oscillaria.
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Oscillatory
Os"cil*la*to*ry (?), a. [Cf. F. oscillatoire. See Oscillate.] Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion.
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Oscillogram
Os"cil*lo*gram (?), n. [L. oscillare + -gram.] (Elec.) An autographic record made by an oscillograph.
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oscillograph
oscillograph n. 1. a device for making a record of the wave forms of fluctuating .
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Oscillograph
Os"cil*lo*graph (?), n. [L. oscillare to swing + -graph.] (Elec.) An apparatus for recording or indicating alternating-current wave forms or other electrical oscillations, especially of voltages or currents; it usually consists of a galvanometer with strong field, in which the mass of the moving part is very small and frequency of vibration very high. -- Os`cil*lo*graph"ic (#), a.
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Oscillometer
Os`cil*lom"e*ter (?), n. [L. oscillare to swing + -meter.] An instrument for measuring the angle through which a ship rolls or pitches at sea.
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oscilloscope
os*cil"lo*scope (?), n. [L. oscillare to swing + -scope.] An electronic measuring instrument which provides a visual representation of the time variation of electrical quantities, such as voltage or current. It may be used to measure the shape of a voltage pulse or the frequency of an oscillating voltage. It can also be used to measure properties of other physical variables, such as sound or light intensity, if they can be translated into electrical voltage or current. The common cathode-ray oscilloscope uses a cathode-ray tube to project a beam of electrons onto the interior of a nearly flat surface surface of the tube, which is coated with a material which fluoresces when struck by the moving electrons. The location of the beam of electrons on the target surface is controlled by electrodes surrounding the point of origin of the beam, which control the horizontal and vertical deflection. The degree of deflection from the vertical center can be made to represent the electrical variable to be measured. The cathode-ray oscilloscope is similar in many respects to the most common form of television tube. -- os*cil"lo*scop`ic, a.
Syn. -- scope, cathode-ray oscilloscope, CRO
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Oscine
Os"cine (?), a. (Zool.) Relating to the Oscines.
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Oscines
Os"ci*nes (?), n. pl. [L. oscen, -inis.] (Zool.) Singing birds; a group of the Passeres, having numerous syringeal muscles, conferring musical ability.
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Oscinian
Os*cin"i*an (?), n. (Zool.) One of the Oscines, or singing birds.
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Oscinian
Os*cin"i*an, n. (Zool.) Any one of numerous species of dipterous flies of the family Oscinidae.
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&hand_; Some, whose larvae live in the stalks, are very destructive to barley, wheat, and rye; others, as the barley fly (Oscinis frit), destroy the heads of grain.
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Oscinine
Os"ci*nine (?), a. (Zool.) Of or pertaining to the Oscines.
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Oscitancy
Os"ci*tan*cy (?), n. [See Oscitant.]
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1. The act of gaping or yawning.
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2. Drowsiness; dullness; sluggishness. Hallam.
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It might proceed from the oscitancy of transcribers. Addison.
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Oscitant
Os"ci*tant (?), a. [L. oscitans, -antis, p. pr. of oscitare: cf. F. oscitant.] 1. Yawning; gaping.
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2. Sleepy; drowsy; dull; sluggish; careless.
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He must not be oscitant, but intent on his charge. Barrow.
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Oscitantly
Os"ci*tant*ly, adv. In an oscitant manner.
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Oscitate
Os"ci*tate (?), v. i. [L. oscitare; os the mouth + citare, v. intens. fr. ciere to move.] To gape; to yawn.
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Oscitation
Os`ci*ta"tion (?), n. [L. oscitatio: cf. F. oscitation.] The act of yawning or gaping. Addison.
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Osculant
Os"cu*lant (?), a. [L. osculans, -antis, p. pr. of osculari to kiss. See Osculate.]
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1. Kissing; hence, meeting; clinging.
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2. (Zool.) Adhering closely; embracing; -- applied to certain creeping animals, as caterpillars.
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3. (Biol.) Intermediate in character, or on the border, between two genera, groups, families, etc., of animals or plants, and partaking somewhat of the characters of each, thus forming a connecting link; interosculant; as, the genera by which two families approximate are called osculant genera.
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Osculate
Os"cu*late (?), v. t. [imp. & p. p. Osculated (?); p. pr. & vb. n. Osculating.] [L. osculatus, p. p. of osculari to kiss, fr. osculum a little mouth, a kiss, dim. of os mouth. See Oral, and cf. Oscillate.]
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1. To kiss.
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2. (Geom.) To touch closely, so as to have a common curvature at the point of contact. See Osculation, 2.
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Osculate
Os"cu*late, v. i. 1. To kiss one another; to kiss.
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2. (Geom.) To touch closely. See Osculation, 2.
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3. (Biol.) To have characters in common with two genera or families, so as to form a connecting link between them; to interosculate. See Osculant.
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Osculation
Os`cu*la"tion (?), n. [L. osculatio a kissing: cf. F. osculation.] 1. The act of kissing; a kiss.
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2. (Geom.) The contact of one curve with another, when the number of consecutive points of the latter through which the former passes suffices for the complete determination of the former curve. Brande & C.
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Osculatory
Os"cu*la*to*ry (?), a. 1. Of or pertaining to kissing; kissing. “The osculatory ceremony.” Thackeray.
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2. (Geom.) Pertaining to, or having the properties of, an osculatrix; capable of osculation; as, a circle may be osculatory with a curve, at a given point.
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Osculatory circle. (Geom.) See Osculating circle of a curve, under Circle. -- Osculatory plane (to a curve of double curvature), a plane which passes through three successive points of the curve. -- Osculatory sphere (to a line of double curvature), a sphere passing through four consecutive points of the curve.
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Osculatory
Os"cu*la*to*ry, n. [LL. osculatorium. See Osculate.] (R. C. Ch.) Same as Pax, 2.
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Osculatrix
Os`cu*la"trix (?), n.; pl. Osculatrixes (#). [NL.] (Geom.) A curve whose contact with a given curve, at a given point, is of a higher order (or involves the equality of a greater number of successive differential coefficients of the ordinates of the curves taken at that point) than that of any other curve of the same kind.
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Oscule
Os"cule (?), n. [Cf. F. oscule. See Osculum.] (Zool.) One of the excurrent apertures of sponges.
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Osculum
Os"cu*lum (?), n.; pl. Oscula (#). [L., a little mouth.] (Zool.) Same as Oscule.
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-ose
-ose (?) suff. [L. -osus: cf. F. -ose. Cf. -ous.]
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1. A suffix denoting full of, containing, having the qualities of, like; as in verbose, full of words; pilose, hairy; globose, like a globe.
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2. (Chem.) A suffix indicating that the substance to the name of which it is affixed is a member of the carbohydrate group; as in cellulose, sucrose, dextrose, etc.
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Osier
O"sier (?), n. [F. osier: cf. Prov. F. oisis, Armor. ozil, aozil, Gr. &unr_;, &unr_;, &unr_;, L. vitex, and E. withy.] (Bot.) (a) A kind of willow (Salix viminalis) growing in wet places in Europe and Asia, and introduced into North America. It is considered the best of the willows for basket work. The name is sometimes given to any kind of willow. (b) One of the long, pliable twigs of this plant, or of other similar plants.
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The rank of osiers by the murmuring stream. Shak.
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Osier bed, or Osier holt, a place where willows are grown for basket making. [Eng.] -- Red osier. (a) A kind of willow with reddish twigs (Salix rubra). (b) An American shrub (Cornus stolonifera) which has slender red branches; -- also called osier cornel.
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Osier
O"sier, a. Made of osiers; composed of, or containing, osiers. “This osier cage of ours.” Shak.
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Osiered
O"siered (?), a. Covered or adorned with osiers; as, osiered banks. [Poetic] Collins.
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Osiery
O"sier*y (?), n. An osier bed.
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Osiris
O*si"ris (?), prop. n. [L., fr. Gr. &unr_;; of Egyptian origin.] (Myth.) One of the principal divinities of Egypt, the brother and husband of Isis. He was figured as a mummy wearing the royal cap of Upper Egypt, and was symbolized by the sacred bull, called Apis. Cf. Serapis. -- O*sir"i*an (#), a.
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Osmanli
Os"man*li (?), n.; pl. Osmanlis (#). [So called from Osman. See Ottoman.] A Turkish official; one of the dominant tribe of Turks; loosely, any Turk.
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Osmate
Os"mate (?), n. (Chem.) A salt of osmic acid. [Formerly written also osmiate.]
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Osmaterium
Os`ma*te"ri*um (?), n.; pl. Osmateria (#). [NL., fr. Gr. &unr_; smell.] (Zool.) One of a pair of scent organs which the larvae of certain butterflies emit from the first body segment, either above or below.
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Osmazome
Os"ma*zome (?), n. [Gr. &unr_; smell, odor + &unr_; broth: cf. F. osmazôme.] (Old Chem.) A substance formerly supposed to give to soup and broth their characteristic odor, and probably consisting of one or several of the class of nitrogenous substances which are called extractives.
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Osmiamate
Os`mi*am"ate (?), n. (Chem.) A salt of osmiamic acid.
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Osmiamic
Os`mi*am"ic (?), a. [Osmium + amido.] (Chem.) Of, pertaining to, or designating, a nitrogenous acid of osmium, H2N2Os2O5, forming a well-known series of yellow salts.
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Osmic
Os"mic (?), a. (Chem.) Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide.
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Osmic acid. (Chem.) (a) Osmic tetroxide. [Obs.] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites. -- Osmic tetroxide (Chem.), a white volatile crystalline substance, OsO4, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odor. Formerly improperly called osmic acid.
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Osmidrosis
Os`mi*dro"sis (?), n. [NL., from Gr. 'osmh` smell + &unr_; to sweat.] (Med.) The secretion of fetid sweat.
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Osmious
Os"mi*ous (?), a. (Chem.) Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride. [Written also osmous.]
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Osmious acid (Chem.), an acid derived from osmium, analogous to sulphurous acid, and forming unstable salts. It is a brown amorphous substance.
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osmite
os"mite (?), n. (Chem.) A salt of osmious acid.
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osmium
os"mi*um (&obreve_;z"m&ibreve_;*ŭm), n. [Gr. 'osmh` a smell, odor, akin to 'o`zein to smell. So named in allusion to the strong chlorinelike odor of osmic tetroxide. See Odor.] (Chem.) A rare metallic element of the platinum group with atomic number 76. It is found native as an alloy in platinum ore, and in iridosmine. It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known. Its tetroxide is used in histological experiments to stain tissues. Symbol Os. Atomic weight 190.2. Specific gravity 22.477.
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osmogene
os"mo*gene (&obreve_;s"m&ouptack_;*jēn or &obreve_;z"m&ouptack_;*jēn), n. [Osmose + root of Gr. ge`nos race.] An apparatus, consisting of a number of cells whose sides are of parchment paper, for conducting the process of osmosis. It is used especially in sugar refining to remove potassium salts from the molasses.
[Webster 1913 Suppl.]

osmograph
os"mo*graph (&obreve_;z"m&ouptack_;*gr&adot_;f), n. [Osmose + -graph.] (Physics) An instrument for recording the height of the liquid in an endosmometer or for registering osmotic pressures.
[Webster 1913 Suppl.]

osmometer
os*mom"e*ter (&obreve_;z"m&obreve_;m"&euptack_;*t&etilde_;r or &obreve_;s"m&obreve_;m"&euptack_;*t&etilde_;r), n. [Gr. 'wsmo`s impulse + -meter.] (Physics) An instrument for measuring the amount of osmotic action in different liquids.
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Osmometry
Os*mom"e*try (&obreve_;z"m&obreve_;m"&euptack_;*tr&ybreve_; or &obreve_;s"m&obreve_;m"&euptack_;*tr&ybreve_;), n. (Physics) The study of osmosis by means of the osmometer.
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Osmose
Os"mose (&obreve_;z"mōs), n. [Gr. &unr_;, equiv. to &unr_; impulse, fr. &unr_; to push.] (Chemical Physics) (a) The tendency in fluids to mix, or become equably diffused, when in contact. Same as osmosis, which see.
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Electric osmose, or Electric endosmose (Elec.), the transportation of a liquid through a porous septum by the action of an electric current.
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osmosis
os*mo"sis (&obreve_;z*mō"s&ibreve_;s), n. [NL., fr. Gr. 'wsmo`s, equiv. to 'w^sis impulse, fr. 'wqei^n to push.] (Chemical Physics) (a) The tendency in fluids to mix, or become equably diffused, when in contact. It was first observed between fluids of differing densities, and as taking place through a membrane or an intervening porous structure. An older term for the phenomenon was Osmose. The more rapid flow from the thinner to the thicker fluid was then called endosmosis (formerly endosmose), and the opposite, slower current, exosmosis (formerly exosmose). Both are, however, results of the same force. Osmosis may be regarded as a form of molecular attraction, allied to that of adhesion. See also osmotic pressure. (b) The action produced by this tendency.
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osmotic
os*mot"ic (?), a. Pertaining to, or having the property of, osmosis; as, osmotic force.
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osmotic pressure
os*mot"ic pres"sure (?), n. (Physical Chemistry) The pressure which a solution of a substance in a liquid exerts on a semipermeable membrane, through which the solvent can diffuse but the dissolved substance (the solute) cannot diffuse, when separated across the membrane from the pure solvent. In general, the osmotic pressure will depend almost proportionally up to certain concentrations upon the molal concentration of the solute.
[PJC]

Osmund
Os"mund (?), n. (Bot.) A fern of the genus Osmunda, or flowering fern. The most remarkable species is the osmund royal, or royal fern (Osmunda regalis), which grows in wet or boggy places, and has large bipinnate fronds, often with a panicle of capsules at the top. The rootstock contains much starch, and has been used in stiffening linen.
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Osnaburg
Os"na*burg (?), n. A species of coarse linen, originally made in Osnaburg, Germany.
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Oso-berry
O"so-ber`ry (?), n. (Bot.) The small, blueblack, drupelike fruit of the Nuttallia cerasiformis, a shrub of Oregon and California, belonging to the Cherry tribe of Rosaceae.
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Osphradium
Os*phra"di*um (?), n.; pl. Osphradia (#). [NL., fr. Gr. &unr_; strong scent, fr. &unr_; to smell.] (Zool.) The olfactory organ of some Mollusca. It is connected with the organ of respiration.
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Ospray
Osprey
{ Os"prey, Os"pray } (?), n. [Through OF. fr. L. ossifraga (orig., the bone breaker); prob. influenced by oripelargus (mountain stork, a kind of eagle, Gr. &unr_;); cf. OF. orpres, and F. orfraie. See Ossifrage.] (Zool.) The fishhawk (Pandion haliaetus).
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Oss
Oss (?), v. i. [See Osse, n.] To prophesy; to presage. [R. & Obs.] R. Edgeworth.
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Osse
Osse (?), n. [Gr. &unr_;.] A prophetic or ominous utterance. [R. & Obs.] Holland.
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Ossean
Os"se*an (?), n. (Zool.) A fish having a bony skeleton; a teleost.
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Ossein
Os"se*in (?), n. [L. os bone.] (Physiol. Chem.) The organic basis of bone tissue; the residue after removal of the mineral matters from bone by dilute acid; in embryonic tissue, the substance in which the mineral salts are deposited to form bone; bone collagen; -- called also ostein. Chemically it is the same as collagen.
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Osselet
Os"se*let (?), n. [F.] 1. A little bone.
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2. (Zool.) The internal bone, or shell, of a cuttlefish.
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Osseous
Os"se*ous (?), a. [L. osseus, from os, ossis bone; akin to Gr. 'oste`on, Skr. asthi. Cf. Oyster.] Composed of bone; resembling bone; capable of forming bone; bony; ossific.
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Osseter
Os"se*ter (?), n. [Russ, osetr' sturgeon.] (Zool.) A species of sturgeon.
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Ossianic
Os`si*an"ic (?), prop. a. Of or pertaining to, or characteristic of, Ossian, a legendary Erse or Celtic bard.
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The compositions might be fairly classed as Ossianic. G. Eliot.
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Ossicle
Os"si*cle (?), n. [L. ossiculum, dim. of os, ossis, a bone.] 1. A little bone; as, the auditory ossicles in the tympanum of the ear.
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2. (Zool.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes.
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ossicular
ossicular adj. Of or pertaining to an ossicle.
Syn. -- ossiculate.
[WordNet 1.5]

ossiculate
ossiculate adj. Of or pertaining to an ossicle.
Syn. -- ossicular.
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Ossiculated
Os*sic"u*la`ted (?), a. Having small bones.
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Ossiculum
Os*sic"u*lum (?), n.; pl. Ossicula (#). [L., a little bone.] (Zool.) Same as Ossicle.
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Ossiferous
Os*sif"er*ous (?), a. [L. os, ossis, a bone + -ferous: cf. F. ossifère.] Containing or yielding bone.
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Ossific
Os*sif"ic (?), a. [L. os, ossis, bone + facere to make: cf. F. ossifique. See Fact.] Capable of producing bone; having the power to change cartilage or other tissue into bone.
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Ossification
Os`si*fi*ca"tion (?), n. [Cf. F. ossification. See Ossify.] 1. (Physiol.) The formation of bone; the process, in the growth of an animal, by which inorganic material (mainly lime salts) is deposited in cartilage or membrane, forming bony tissue; ostosis.
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&hand_; Besides the natural ossification of growing tissue, there is the so-called accidental ossification which sometimes follows certain abnormal conditions, as in the ossification of an artery.
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2. The state of being changed into a bony substance; also, a mass or point of ossified tissue.
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Ossified
Os"si*fied (?), a. Changed to bone or something resembling bone; hardened by deposits of mineral matter of any kind; -- said of tissues.
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Ossifrage
Os"si*frage (?), n. [L. ossifraga, ossifragus, osprey, fr. ossifragus bone breaking; os, ossis, a bone + frangere, fractum, to break. See Osseous, Break, and cf. Osprey, Ossifragous.] (Zool.) (a) The lammergeir. (b) The young of the sea eagle or bald eagle. [Obs.]
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Ossifragous
Os*sif"ra*gous (?), a. [L. ossifragus. See Ossifrage.] Serving to break bones; bone-breaking.
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Ossify
Os"si*fy (?), v. t. [imp. & p. p. Ossified (?); p. pr. & vb. n. Ossifying (?).] [L. os, ossis, bone + -fy: cf. F. ossifier. See Osseous.] 1. (Physiol.) To form into bone; to change from a soft animal substance into bone, as by the deposition of lime salts.
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2. (Fig.): To harden; as, to ossify the heart. Ruskin.
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Ossify
Os"si*fy, v. i. (Physiol.) To become bone; to change from a soft tissue to a hard bony tissue.
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Ossifying
Os"si*fy`ing (?), a. (Physiol.) Changing into bone; becoming bone; as, the ossifying process.
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Ossivorous
Os*siv"o*rous (?), a. [L. os, ossis, bone + vorare to devour: cf. F. ossivore.] Feeding on bones; eating bones; as, ossivorous quadrupeds. Derham.
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Osspringer
Os"spring*er (?), n. The osprey. [R.]
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Ossuarium
Os`su*a"ri*um (?), n. [L.] A charnel house; an ossuary. Walpole.
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Ossuary
Os"su*a*ry (?), n.; pl. -ries (#). [L. ossuarium, fr. ossuarius of or bones, fr. os, ossis, bone: cf. F. ossuaire.] A place where the bones of the dead are deposited; a charnel house. [Obs.] Sir T. Browne.
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Ost
Ost (?), n. See Oast.
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Osteal
Os"te*al (?), a. [Gr. 'oste`on a bone.] Osseous.
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Ostein
Os"te*in (?), n. [Gr. 'oste`on bone.] Ossein.
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Osteitis
Os`te*i"tis (?), n. [NL. See Osteo-, and -itis.] (Med.) Inflammation of bone.
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Osteler
Os"tel*er (?), n. Same as Hosteler. Wyclif.
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Ostend
Os*tend" (?), v. t. [L. ostendere to show.] To exhibit; to manifest. [Obs.]
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Mercy to mean offenders we'll ostend. J. Webster.
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Ostensibility
Os*ten`si*bil"i*ty (?), n. The quality or state of being ostensible.
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Ostensible
Os*ten"si*ble (&obreve_;s*t&ebreve_;n"s&ibreve_;*b'l), a. [From L. ostensus, p. p. of ostendere to show, prop., to stretch out before; fr. prefix obs- (old form of ob-) + tendere to stretch. See Tend.]
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1. Capable of being shown; proper or intended to be shown. [R.] Walpole.
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2. Outwardly appearing to be; shown to be; exhibited; apparent; evident.
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3. Declared; avowed; professed; pretended; -- often used as opposed to real or actual; as, an ostensible reason, motive, or aim. D. Ramsay.
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Ostensibly
Os*ten"si*bly (&obreve_;s*t&ebreve_;n"s&ibreve_;*bl&ybreve_;), adv. In an ostensible manner; avowedly; professedly; apparently. Walsh.
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Ostensibly, we were intended to prevent filibustering into Texas, but really as a menace to Mexico. U. S. Grant.
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Ostension
Os*ten"sion (?), n. [L. ostensio a showing: cf. F. ostension. See Ostend.] (Eccl.) The showing of the sacrament on the altar in order that it may receive the adoration of the communicants.
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Ostensive
Os*ten"sive (?), a. Showing; exhibiting.
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Ostensive demonstration (Math.), a direct or positive demonstration, as opposed to the apagogical or indirect method.
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Ostensively
Os*ten"sive*ly, adv. In an ostensive manner.
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Ostensory
Ostensorium
{ ‖Os`ten*so"ri*um (?), Os*ten"so*ry (?), } n.; pl. L. -soria (#), E. -sories (#). [NL. ostensorium: cf. F. ostensoir. See Ostensible.] (R. C. Ch.) Same as Monstrance.
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Ostent
Os"tent (?), n. [L. ostentus, ostentum, fr. ostendere (p. p. ostensus and ostentus) to show. See Ostensible.]
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1. Appearance; air; mien. Shak.
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2. Manifestation; token; portent. Dryden.
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We asked of God that some ostent might clear
Our cloudy business, who gave us sign.
Chapman.
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Ostentate
Os"ten*tate (?), v. t. [L. ostentatus, p. p. of ostentare, v. intens. fr. ostendere. See Ostent.] To make an ambitious display of; to show or exhibit boastingly. [R.] Jer. Taylor.
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Ostentation
Os`ten*ta"tion (?), n. [L. ostentatio: cf. F. ostentation.] 1. The act of ostentating or of making an ambitious display; unnecessary show; pretentious parade; -- usually in a detractive sense. “Much ostentation vain of fleshly arm.” Milton.
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He knew that good and bountiful minds were sometimes inclined to ostentation. Atterbury.
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2. A show or spectacle. [Obs.] Shak.
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Syn. -- Parade; pageantry; show; pomp; pompousness; vaunting; boasting. See Parade.
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Ostentatious
Os`ten*ta"tious (?), a. Fond of, or evincing, ostentation; unduly conspicuous; pretentious; boastful.
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Far from being ostentatious of the good you do. Dryden.
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The ostentatious professions of many years. Macaulay.
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-- Os`ten*ta"tious*ly, adv. -- Os`ten*ta"tious*ness, n.
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Ostentator
Os"ten*ta`tor (?), n. [L.] One fond of display; a boaster. Sherwood.
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Ostentive
Os*ten"tive (?), a. Ostentatious. [Obs.]
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Ostentous
Os*ten"tous (?), a. Ostentatious. [Obs.] Feltham.
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osteo-
os"te*o- pref. A combining form of Gr. 'oste`on a bone.
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Osteoblast
Os"te*o*blast (?), n. [Osteo- + -blast.] (Anat.) One of the protoplasmic cells which occur in the osteogenetic layer of the periosteum, and from or around which the matrix of the bone is developed; an osteoplast.
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osteoclasis
os`te*o*cla"sis (?), n. [NL. See Osteoclast.] (Surg.) The operation of breaking a bone in order to correct deformity.
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osteoclast
os"te*o*clast (?), n. [Osteo- + Gr. kla^n to break.] 1. (Physiol.) Same as myeloplax, a large multinucleate cell within the bone, which functions in the absroption and removal of bone tissue.
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&hand_; The osteoclasts occur usually in pits or cavities which they appear to have excavated, and are supposed to be concerned in the absorption of the bone matrix.
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2. An instrument for performing osteoclasis.
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osteocolla
os`te*o*col"la (?), n. [Osteo- + Gr. &unr_; glue.]
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1. A kind of glue obtained from bones. Ure.
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2. A cellular calc tufa, which in some places forms incrustations on the stems of plants, -- formerly supposed to have the quality of uniting fractured bones.
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Osteocomma
Os`te*o*com"ma (?), n.; pl. L. Osteocommata (#), E. Osteocommas (#). [NL. See Osteo-, and Comma.] (Anat.) A metamere of the vertebrate skeleton; an osteomere; a vertebra. Owen.
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Osteocope
Os"te*o*cope (?), n. [Gr. &unr_;; 'oste`on a bone + &unr_; a striking, pain: cf. F. ostéocope.] (Med.) Pain in the bones; a violent fixed pain in any part of a bone. -- Os`te*o*cop"ic (#), a.
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Osteocranium
Os`te*o*cra"ni*um (?), n. [Osteo- + cranium.] (Anat.) The bony cranium, as distinguished from the cartilaginous cranium.
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Osteodentine
Os`te*o*den"tine (?), n. [Osteo- + dentine.] (Anat.) A hard substance, somewhat like bone, which is sometimes deposited within the pulp cavity of teeth.
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Osteogen
Os"te*o*gen (?), n. [Osteo- + -gen.] (Physiol.) The soft tissue, or substance, which, in developing bone, ultimately undergoes ossification.
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Osteogeny
Osteogenesis
{ Os`te*o*gen"e*sis (?), Os`te*og"e*ny (?), } n. [Osteo- + genesis, or the root of Gr. gi`gnesqai to be born: cf. F. ostéogénie.] (Physiol.) The formation or growth of bone.
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Osteogenetic
Os`te*o*ge*net"ic (?), a. (Physiol.) Connected with osteogenesis, or the formation of bone; producing bone; as, osteogenetic tissue; the osteogenetic layer of the periosteum.
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Osteogenic
Os`te*o*gen"ic (?), a. (Physiol.) Osteogenetic.
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Osteographer
Os`te*og"ra*pher (?), n. An osteologist.
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Osteography
Os`te*og"ra*phy (?), n. [Osteo- + -graphy.] The description of bones; osteology.
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Osteoid
Os"te*oid (?), a. [Osteo- + -oid: cf. Gr. &unr_;.] (Anat.) Resembling bone; bonelike.
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Osteolite
Os"te*o*lite (?), n. [Osteo- + -lite.] (Min.) A massive impure apatite, or calcium phosphate.
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Osteologer
Os`te*ol"o*ger (?), n. One versed in osteology; an osteologist.
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Osteological
Osteologic
{ Os`te*o*log"ic (?), Os`te*o*log"ic*al (?), } a. [Cf. F. ostéologique.] Of or pertaining to osteology. -- Os`te*o*log"ic*al*ly, adv.
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Osteologist
Os`te*ol"o*gist (?), n. One who is skilled in osteology; an osteologer.
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Osteology
Os`te*ol"o*gy (?), n. [Osteo- + -logy: cf. F. ostéologie.] The science which treats of the bones of the vertebrate skeleton.
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Osteolysis
Os`te*ol"y*sis (?), n. [NL. osteo- + Gr. ly`sis a loosing.] Softening and absorption of bone. -- Os`te*o*lyt"ic (#), a.
[Webster 1913 Suppl.]

Osteoma
Os`te*o"ma (?), n.; pl. Osteomata (#). [NL. See Osteo-, and -oma.] (Med.) A tumor composed mainly of bone; a tumor of a bone.
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Osteomalacia
Os`te*o*ma*la"ci*a (?), n. [NL., fr. Gr. 'oste`on bone + &unr_; softness.] (Med.) A disease of the bones, in which they lose their earthy material, and become soft, flexible, and distorted. Also called malacia.
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Osteomanty
Os"te*o*man`ty (?), n. [Osteo- Gr. mantei`a divination.] Divination by means of bones. [R.]
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Osteomere
Os"te*o*mere (?), n. [Osteo- + -mere.] (Anat.) An osteocomma. Owen.
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Osteopath
Os"te*o*path (?), n. A practitioner of osteopathy.
[Webster 1913 Suppl.]

Osteopathic
Os`te*o*path"ic (?), a. (Med.) Of or pertaining to osteopathy. -- Os`te*o*path"ic*al*ly (#), adv.
[Webster 1913 Suppl.]

Osteopathist
Os`te*op"a*thist (?), n. One who practices osteopathy; an osteopath.
[Webster 1913 Suppl.]

osteopathy
os`te*op"a*thy (?), n. [Osteo- + Gr. pa`qos suffering.] (Med.) (a) Any disease of the bones. [R.] (b) A system of treatment based on the theory that diseases are chiefly due to deranged mechanism of the bones, nerves, blood vessels, and other tissues, and can be remedied by manipulations of these parts. Modern practitioners use the therapeutic and diagnostic techniques of modern medicine as well as manipulative procedures.
[Webster 1913 Suppl. +PJC]

Osteoperiostitis
Os`te*o*per`i*os*ti"tis (?), n. [NL.; osteo- + periosteum + -itis.] (Med.) Inflammation of a bone and its periosteum.
[Webster 1913 Suppl.]

Osteophone
Os"te*o*phone (?), n. [Gr. 'oste`on bone + fwnh` voice.] An instrument for transmission of auditory vibrations through the bones of the head, so as to be appreciated as sounds by persons deaf from causes other than those affecting the nervous apparatus of hearing.
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Osteoplast
Os"te*o*plast (?), n. [Osteo- + Gr. pla`ssein to form.] (Anat.) An osteoblast.
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Osteoplastic
Os`te*o*plas"tic (?), a. [Osteo- + -plastic.]
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1. (Physiol.) Producing bone; as, osteoplastic cells.
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2. (Med.) Of or pertaining to the replacement of bone; as, an osteoplastic operation.
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Osteoplasty
Os"te*o*plas`ty (?), n. [Osteo- + -plasty.] (Med.) An operation or process by which the total or partial loss of a bone is remedied. Dunglison.
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Osteoporosis
Os`te*o*po*ro"sis (?), n. [NL.; osteo- + Gr. po`ros pore.] (Med. & Physiol.) An absorption of bone so that the bone tissue becomes unusually porous. It occurs especially in elderly men and postmenopausal women, and predisposes the elderly to fractures of the bones.
[Webster 1913 Suppl. +PJC]

Osteopterygious
Os`te*op`ter*yg"i*ous (?), a. [Osteo- Gr. &unr_; a fin.] (Zool.) Having bones in the fins, as certain fishes.
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Osteosarcoma
Os`te*o*sar*co"ma (?), n.; pl. Osteosarcomata (#). [NL. See Osteo-, and sarcoma.] (Med.) A tumor having the structure of a sarcoma in which there is a deposit of bone; sarcoma connected with bone.
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Osteosclerosis
Os`te*o*scle*ro"sis (?), n. [NL.; osteo- + sclerosis.] Abnormal hardness and density of bone.
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Osteotome
Os"te*o*tome (?), n. [Osteo- + Gr. te`mnein.] (Surg.) Strong nippers or a chisel for dividing bone.
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Osteotomist
Os`te*ot"o*mist (?), n. One skilled in osteotomy.
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Osteotomy
Os`te*ot"o*my (?), n. 1. The dissection or anatomy of bones; osteology.
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2. (Surg.) The operation of dividing a bone or of cutting a piece out of it, -- done to remedy deformity, etc.
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Osteozoa
Os`te*o*zo"a (?), n. pl. [NL., fr. Gr. 'oste`on a bone + zw^,on an animal.] (Zool.) Same as Vertebrata.
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Ostiary
Os"ti*a*ry (?), n.; pl. -ries (#). [L. ostium door, entrance. See Usher.] 1. The mouth of a river; an estuary. [R.] Sir T. Browne.
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2. One who keeps the door, especially the door of a church; a porter. N. Bacon.
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Ostic
Os"tic (?), a. [From North American Indian oshtegwon a head.] Pertaining to, or applied to, the language of the Tuscaroras, Iroquois, Wyandots, Winnebagoes, and a part of the Sioux Indians. Schoolcraft.
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Ostiole
Os"ti*ole (?), n. [L. ostiolum a little door, dim. of ostium a door: cf. F. ostiole.] (Bot.) (a) The exterior opening of a stomate. See Stomate. (b) Any small orifice.
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Ostitis
Os*ti"tis (?), n. [NL.] (Med.) See Osteitis.
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Ostium
Os"ti*um (?), n.; pl. Ostia (#). [L.] (Anat.) An opening; a passage.
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Ostler
Ost"ler (?), n. See Hostler.
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Ostleress
Ost"ler*ess, n. A female ostler. [R.] Tennyson.
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Ostlery
Ost"ler*y (?), n. See Hostelry. [Obs.]
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Ostmen
Ost"men (?), n. pl.; sing. Ostman. [See East, and Man.] East men; Danish settlers in Ireland, formerly so called. Lyttelton.
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Ostosis
Os*to"sis (?), n. [NL., from Gr. 'oste`on a bone.] (Physiol.) Bone formation; ossification. See Ectostosis, and Endostosis.
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Ostracea
Os*tra"ce*a (?), n. pl. [NL., fr. Gr. 'o`strakon shell of a testacean.] (Zool.) A division of bivalve mollusks including the oysters and allied shells.
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Ostracean
Os*tra"cean (?), n. [L. ostrea an oyster. See Oyster.] (Zool.) Any one of a family of bivalves, of which the oyster is the type.
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Ostracion
Os*tra"ci*on (?), prop. n. [NL., fr. Gr. 'ostra`kion small shell.] (Zool.) A genus of plectognath fishes of the family Ostraciontidae having the body covered with solid, immovable, bony plates. It includes the trunkfishes (also called boxfish).
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Ostraciont
Os*tra"ci*ont (?), n. (Zool.) A fish of the genus Ostracion and allied genera.
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ostracise
os"tra*cise (?), v. t. Same as ostracize. [Chiefly Brit.]
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ostracism
os"tra*cism (?), n. [Gr. 'ostrakismo`s, fr. 'ostraki`zein to ostracize. See Ostracize.] 1. (Gr. Antiq.) Banishment by popular vote, -- a means adopted at Athens to rid the city of a person whose talent and influence gave umbrage.
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2. Banishment; exclusion; as, social ostracism.
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Public envy is as an ostracism, that eclipseth men when they grow too great. Bacon.
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Sentenced to a perpetual ostracism from the . . . confidence, and honors, and emoluments of his country. A. Hamilton.
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Ostracite
Os"tra*cite (?), n. (Paleon.) A fossil oyster.
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Ostracize
Os"tra*cize (?), v. t. [imp. & p. p. Ostracized (?); p. pr. & vb. n. Ostracizing (?).] [Gr. 'ostraki`zein, fr. 'o`strakon a tile, a tablet used in voting, a shell; cf. 'o`streon oyster, 'oste`on bone. Cf. Osseous, Oyster.] 1. (Gr. Antiq.) To exile by ostracism; to banish by a popular vote, as at Athens. Grote.
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2. To banish from society, by a general consent; to exclude from social, political, or private favor; to exclude from conversation or friendship; to shun; as, he was ostracized by his former friends. A person may be ostracized by a formal vote or by a widespread but informal agreement. Marvell.
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ostracod
ostracod n. A member of the Ostracoda, an order of tiny marine and freshwater crustaceans with a shrimplike body enclosed in a bivalve shell.
Syn. -- seed shrimp, mussel shrimp.
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Ostracoda
Os*trac"o*da (?), prop. n. pl. (Zool.) An order of Entomostraca possessing shrimplike bodies enclosed in hard bivalve shells; called also seed shrimp and mussel shrimp. They were formerly referred to as Ostracoidea. They are of small size, and swim freely about; many are less than 1 mm in length. Microfossils of certain extinct orders have been found extending back to the Cambrian age.
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ostracodan
ostracodan n. Same as ostracod.
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ostracoderm
ostracoderm n. Any of several extinct fishlike jawless vertebrates having a heavily armored body; of the Paleozoic.
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Ostracodermi
Os`tra*coder"mi (?), prop. n. pl. [NL., fr. Gr. 'o`strakon shell of a testacean + &unr_; skin.] (Zool.) A suborder of fishes of which Ostracion is the type.
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ostracoid
os"tra*coid (?), a. (Zool.) Of or pertaining to the Ostracoidea (now Ostracoda). -- n. One of the Ostracoidea (now Ostracoda).
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Ostracoidea
Os`tra*coi"de*a (?), n. pl. [NL., fr. Gr. 'o`strakon shell of a testacean + -oid.] (Zool.) An order of Entomostraca possessing hard bivalve shells. They are of small size, and swim freely about. Now usually written Ostracoda. [archaic]
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Ostrea
Os"tre*a (?), n. [L., an oyster.] (Zool.) A genus of bivalve Mollusca which includes the true oysters.
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Ostreaceous
Os`tre*a"ceous (?), a. [L. ostrea an oyster. See Oyster.] (Zool.) Of or pertaining to an oyster, or to a shell; shelly.
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The crustaceous or ostreaceous body. Cudworth.
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Ostreaculture
Os"tre*a*cul`ture (?), n. The artificial cultivation of oysters.
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Ostreophagist
Os`tre*oph"a*gist (?), n. [Gr. 'o`streon an oyster + fagei^n to eat.] One who feeds on oysters.
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ostrich
os"trich (&obreve_;s"trich), n. [OE. ostriche, ostrice, OF. ostruche, ostruce, F. autruche, L. avis struthio; avis bird + struthio ostrich, fr. Gr. &unr_;, fr. &unr_; bird, sparrow. Cf. Aviary, Struthious.] [Formerly written also estrich.] (Zool.) A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high.
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&hand_; The South African ostrich (Struthio australis) and the Asiatic ostrich are considered distinct species by some authors. Ostriches are now domesticated in South Africa in large numbers for the sake of their plumes. The body of the male is covered with elegant black plumose feathers, while the wings and tail furnish the most valuable white plumes.
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Ostrich farm, a farm on which ostriches are bred for the sake of their feathers, oil, eggs, etc. -- Ostrich farming, the occupation of breeding ostriches for the sake of their feathers, etc. -- Ostrich fern (Bot.) a kind of fern (Onoclea Struthiopteris), the tall fronds of which grow in a circle from the rootstock. It is found in alluvial soil in Europe and North America.
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Ostriferous
Os*trif"er*ous (?), a. [L. ostrifer; ostrea oyster + ferre.] Producing oysters; containing oysters.
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Ostrogoth
Os"tro*goth (?), prop. n. [L. Ostrogothi, pl. See East, and Goth.] One of the Eastern Goths. See Goth.
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Ostrogothic
Os`tro*goth"ic (?), prop. a. Of or pertaining to the Ostrogoths.
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Oswego tea
Os*we"go tea" (?). (Bot.) An American aromatic herb (Monarda didyma), with showy, bright red, labiate flowers.
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otacoustic
ot`a*cous"tic (?), a. [Oto- + acoustic: cf. F. otacoustique.] Assisting the sense of hearing; as, an otacoustic instrument.
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otacousticon
otacoustic
{ ot`a*cous"tic (?), ot`a*cous"ti*con (?), } n. An instrument to facilitate hearing, as an ear trumpet.
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Otaheite apple
O`ta*hei"te ap"ple (?). [So named from Otaheite, or Tahiti, one of the Society Islands.] (Bot.) (a) The fruit of a Polynesian anacardiaceous tree (Spondias dulcis), also called vi-apple. It is rather larger than an apple, and the rind has a flavor of turpentine, but the flesh is said to taste like pineapples. (b) A West Indian name for a myrtaceous tree (Jambosa Malaccensis) which bears crimson berries.
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Otalgia
O*tal"gi*a (?), n. [NL., fr. Gr. 'wtalgi`a; o'y^s, 'wto`s, the ear + 'a`lgos pain: cf. F. otalgie.] (Med.) Pain in the ear; earache.
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Otalgic
O*tal"gic (?), a. (Med.) Of or pertaining to otalgia. -- n. A remedy for otalgia.
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Otalgy
O*tal"gy (?), n. Pain in the ear; otalgia.
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Otary
O"ta*ry (?), n.; pl. Otaries (#). [Gr. 'wtaro`s large-eared, fr. o'y^s, 'wto`s, ear: cf. F. otarie.] (Zool.) Any eared seal.
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Otheoscope
O"the*o*scope (?), n. [Gr. 'wqei^n to push + -scope.] (Physics) An instrument for exhibiting the repulsive action produced by light or heat in an exhausted vessel; a modification of the radiometer. W. Crookes.
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Other
Oth"er (ŭ&thlig_;"&etilde_;r), conj. [See Or.] Either; -- used with other or or for its correlative (as either . . . or are now used). [Obs.]
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Other of chalk, other of glass. Chaucer.
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Other
Oth"er, pron. & a. [AS. ōðer; akin to OS. āðar, ōðar, D. & G. ander, OHG. andar, Icel. annarr, Sw. annan, Dan. anden, Goth. anþar, Skr. antara: cf. L. alter; all orig. comparatives: cf. Skr. anya other. √180. Cf. Alter.] [Formerly other was used both as singular and plural.]
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1. Different from that which, or the one who, has been specified; not the same; not identical; additional; second of two.
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Each of them made other for to win. Chaucer.
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Whosoever shall smite thee on thy right cheek, turn to him the other also. Matt. v. 39.
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2. Not this, but the contrary; opposite; as, the other side of a river.
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3. Alternate; second; -- used esp. in connection with every; as, every other day, that is, each alternate day, every second day.
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