Oxford Reference Online is the core collection which contains about 100 dictionary, language reference, and subject reference works published by Oxford University Press.
Credo Reference offers over 160 fully searchable reference titles, including encyclopedias, dictionaries, thesauri and books of quotations, and a range of subject-specific titles covering everything from art to accountancy and literature to law. Includes the American Heritage Dictionary of the English Language and many other dictionaries. Find out about the titles in Credo Reference.
The definitive record of the English language. Chronological examples of usage make it especially good for researching the historical development of words.
While not as comprehensive as other sources, this is a good quick reference site from an authority in dictionary publishing.
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.
Search nearly 1,000 online English dictionaries at once, or use dictionaries in 24 different languages.
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Last modified by: John Weible on 8/29/07