Authenticate Definition

authenticated, authenticates, authenticating
To establish the authenticity of; prove genuine.
A specialist who authenticated the antique samovar.
American Heritage
To make authentic or valid.
Webster's New World
To establish the truth of; verify.
Webster's New World
To prove to be genuine or as represented.
Webster's New World
To prove that something, such as a document, is what it purports to be, especially so that the item can be admitted into evidence at a trial or hearing. For example, a party wishing to admit a letter into evidence may ask the witness whether it is, indeed, the letter he received, does he recognize the handwriting, and similar questions.
Webster's New World Law

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