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Agrovoc is a multilingual, structured and controlled vocabulary designed to cover the terminology of all subject fields in agriculture, forestry, fisheries, food and related domains (e.g. environment). It is available in English, French, Spanish, Chinese, Arabic, Czech, Portuguese, and Thai.


eLook includes an on-line dictionary, thesaurus, and computer dictionary. To use the dictionary, click dictionary under their reference section; same for the thesaurus. To use the computer dictionary also look under reference and click computing reference. Each has a search box.

Getty Thesaurus of Art & Architecture

This thesaurus lets you search for art and architecture terms. Try a search and you�ll see a list of possible categories that match. Click on the nearest match and you will learn about the topic and what synonyms are available for the term in question.

Getty Thesaurus of Geography

If you are looking for information on a particular location or locale, this may be the tool you are looking for. This tool is available free of charge from the J. Paul Getty Trust.


This site contains an online English dictionary, along with a dream dictionary (helps interpret dreams by providing detailed explanations of various dream subjects), a medical dictionary, a computer dictionary (based on the FOLDOC dictionary) and a thesaurus. To use the dictionary, you may search using the search box or you may browse the word listings by letter of the alphabet.

Lexical FreeNet

This program allows you to search for relationships between words, concepts, and people. It is a combination thesaurus, rhyming dictionary, pun generator, and concept navigator.

Merriam-Webster Thesaurus

The Merriam-Webster Thesaurus is available, for free, at their web site. Type the word into the search box and go! It's as simple as that, but that's the point.

NASA - Thesaurus

Hey Space Cadets, or anyone else interested in astronomy and space travel! NASA has it's own thesaurus of terms related to space exploration. It's available in a number of online formats. So, if you don't know a White Dwarf from a Red Giant, this site may hold the answer.

Roget's II Thesaurus

Bartleby provides access to Roget's II Thesaurus, with over 35,000 entries. You can search by word or browse the list of keywords via the index.

Each entry includes a brief definition, synonyms and antonyms (where appropriate). It is arranged in easy-to-use dictionary-style format, and it is free to use.

Visual Thesaurus

The Visual Thesaurus offers visual displays of the English language. Looking up a word creates an interactive visual map with your word in the center of the display, connected to related words and meanings. Discover and learn from this dictionary and thesaurus with over 145,000 words and 115,000 meanings, audio pronunciations, spell checking, printing, etc.


WordNet� is an online lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept. Different relations link the synonym sets.


WordWeb Pro is a international English thesaurus and dictionary for Windows. It can search words by prefix or suffix.

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