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Dictionaries

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OneLook Dictionaries Free resource--no login required

OneLook is a meta-dictionary. Enter an English language word or acronym, and OneLook will search its index of over 900 general and special interest dictionaries for the definition.

Oxford Reference Online University of Illinois Only

Oxford Reference Online is the core collection which contains about 100 dictionary, language reference, and subject reference works published by Oxford University Press.

Oxford English Dictionary University of Illinois Only

The definitive record of the English language. Chronological examples of usage make it especially good for researching the historical development of words.

Merriam-Webster Online Dictionary and Thesaurus Free resource--no login required

While not as comprehensive as other sources, this is a good quick reference site from an authority in dictionary publishing.

Specialty Dictionaries Free resource--no login required

Provides a variety of links to specialized subject dictionaries in many different areas.

VisuWords Free resource--no login required

A graphical dictionary/thesaurus that allows you to see the relations between words, concepts, and associations.

Wordnik Free resource--no login required

An online project that gives as much information as possible for words, such as images, statistics, pronounciation, and multple definitions.