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The web

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Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

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Free online English dictionary from Oxford, plus thesaurus, word of the day, resume examples, letter writing, and English grammar

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EarthRef.org is the web site for Earth Reference Data and Models

Wordnik: Dictionary Definitions and Example Sentences