Au*then"ti*cate (?), v. t. [imp. & p. p. Authenticated (); p. pr. & vb. n. Authenticating ().] [Cf. LL. authenticare.]
To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.
The king serves only as a notary to authenticate the choice of judges.
To prove authentic; to determine as real and true; as, to authenticate a portrait.
© Webster 1913.