General Dictionaries and Thesauri
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Dictionary.comFree internet dictionary
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Oxford English Dictionary This link opens in a new windowMeaning, history, and usage of words and phrases from across the English-speaking world.
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IMTranslator DictionaryOffers millions of professional translations of words, phrases, idioms, expressions and sentences ranging from colloquial and informal to technical and subject-oriented terminology. Enhanced with voice capability, machine translation, advanced all-dictionaries search and much more.
Illustrated Dictionaries
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The Cambridge Illustrated Dictionary of Natural History
ISBN: 0521399416Print book -
Compton's dictionary of the natural sciences, fully illustrated, fully indexed
Print book -
DK Illustrated Oxford Dictionary
ISBN: 0789435578Print book -
The Facts on File Visual Dictionary
ISBN: 0816015449Print book -
Mathematics Illustrated Dictionary: Facts, Figures, and People Including the New Math
Print book -
Oxford Picture Dictionary : English/Arabic
ISBN: 9780194740104Print book
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Internet Picture DictionaryThe Internet Picture Dictionary is a completely free, online multilingual picture dictionary designed especially for ESL students and beginning English, French, German, Spanish and Italian language learners of all ages.
Dictionaries of Idioms, Cliches, and Jargon
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The American Heritage Dictionary of Idioms
ISBN: 9780395727744eBook -
The Dictionary of Cliches
ISBN: 0517060205Print book -
The Facts on File Dictionary of Cliches
ISBN: 0816043566Print book -
Jargon: its uses and abuses
ISBN: 063118063XPrint book -
The Penguin Dictionary of English Idioms
ISBN: 0140511350Print book
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ESL Idioms and SlangIdiom and slang links of interest to teachers and students of English as a Second Language.