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I would like to have a dictionary for my website where the user can easily fill in a word or better yet right click a word and get the definition right there on the page or something along those lines.

Are there any Dictionary API's out there that I can incorporate to my site? I have looked and cannot find anything.

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up vote 5 down vote accepted

ProgrammableWeb tracks web APIs & it shows a useful list when you search with the keyword "dictionary"

FOLDOC.org & WordNet from Princeton University provide their dictionary database for free. Customizing the database will require some programming.

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I think Wordnik specifically from that list is trying to grow quite a bit and uses modern techniques. It certainly has an API that could be integrated. – Alexandre Rafalovitch Aug 15 '11 at 17:59
Thanks for the information – L84 Aug 15 '11 at 21:58

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