Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for authenticate from the 1913 edition of Webster's Revised Unabridged Dictionary. Define authenticate using one of the most comprehensive free online dictionaries on the web.

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Part of Speech: verb transitive
Results: 2
2. To prove authentic; to determine as real and true; as, to authenticate a portrait.
Examples of usage:
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