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Almanac
Atlas

Dictionary

English
 
    Medical     Science

Encyclopedia

Thesaurus

Almanac

Daily Almanac

Information Please - from the print reference database, offering millions of useful and interesting facts on a wide range of topics online. Also includes a dictionary and encyclopedia.

Old Farmer's Almanac - fun and practical information for everyday life, including moon calendars, planting charts, recipes, weather predictions and more.

Dictionary-English

DICT Development Group - simultaneously search several dictionaries using freely available client/server software.

Dictionary of American Regional English - specializes in regional words and phrases.

Information Please - from the print reference database, offering millions of useful and interesting facts on a wide range of topics online. Also includes a dictionary and encyclopedia.

Lexical FreeNet - this program allows you to search for rhymes and relationships between words and concepts that might never have occurred to you.

Merriam-Webster Dictionary

Online Rhyming Dictionary - Retrieve a list of words that rhyme with a given input word.

Webster's Dictionary 2.0 - spell checker for WWW documents. Enter a URL and this program will retrieve the document and spell check it.

Webster's Revised Unabridged Dictionary, 1913 Edition - an older dictionary, but with all the common words and a rich source of definitions of obsolete words.

Wordsmyth English Dictionary-Thesaurus

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Dictionary-Medical

List and Glossary of Medical Terms - in several European languages.

Medical/Surgical Word Glossary - FDA approved drugs, devices, surgical/medical instruments, and procedures.

MedicineNet Glossary

Medspeak - the ER dictionary.

On-line Medical Dictionary - OMD is a searchable dictionary of terms relating to biochemistry, biology, chemistry, medicine, molecular biology, physics, plant biology, radiobiology, zoology, science and technology.

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Dictionary-Science

Dictionary of Cell Biology - provides quick access to easily-understood and cross-referenced definitions.

Dictionary of Units, A - an explanation of the principal systems of units, their history, standards, and conversion factors for changing from one to the other.

Dog Term Glossary

Glossary of Satellite Terms

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Encyclopedia

Encyclopedia Smithsonian - information about a variety of topics, from Smithsonian Institution sources.

Encyclopedia.com - provides more than 17,000 short articles from the Concise Columbia Electronic Encyclopedia, Third Edition.

Information Please - from the print reference database, offering millions of useful and interesting facts on a wide range of topics online. Also includes a dictionary and encyclopedia.

Internet Encyclopedia of Philosophy

Jones Digital Century Update - archive of updated articles that will be added to future editions of the Jones Multi-Media Encyclopedia CD-ROM reference work.

Stanford Encyclopedia of Philosophy

Index - Encyberpedia - Information website which links together encyclopedias throughout the internet.

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Thesaurus

WordNet on-line lexical reference where English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept.

ARTFL Project: ROGET Form

Astronomy Thesaurus - astronomy terms in English, French, German, Spanish and Italian; all terms cross referenced.

Lexical FreeNet - this program allows you to search for rhymes and relationships between words and concepts that might never have occurred to you.

NASA Thesaurus

Plumb Design Visual Thesaurus - exploration of sense relationships within the English language. By clicking on words, you follow a thread of meaning, creating a spatial map of linguistic associations.

Synonyms Dictionary

Thesaurus Gopher

Roget's Thesaurus [thesaurus.com] - of English words and phrases.

Roget's Thesaurus [city.ac.uk]

Roget's Thesaurus [nih.gov]

Roget's Thesaurus Search Form