Merriam-Webster has made both their dictionary and thesaurus available through this site. Very well done, and extremely handy.
The DICT Development Group
One dictionary not enough? Use this site to search multiple dictionaries with one form, including Websters', the Jargon File, and half a dozen others.
Over 100,000 acronyms, abbreviations, and their meanings. Unbelievably handy for those days when the alphabet soup just becomes a little overwhelming.
Thesaurus.com has made Roget's Thesaurus available online.
Dictionary.com provides a handy interface to several word-search facilities.
Yes, you guessed it, a free, online encyclopedia. Included are over 14,000 articles from the Concise Columbia Electronic Encyclopedia. Note, however, that there are many links to "pay services" such as the Electric Library.
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Everything else, © 1999 Deb Richardson