something which validates or confirms the authenticity of something / (computing) proof of the identity of a user logging on to some network / a hallmark or assay-mark on a piece of metalwork

plural of authentication

plural of authenticator

plural of authenticity

One who authenticates. / A feature that shows something to be authentic. / (film, television) A person employed to check the accuracy and realism of a script.

present participle of authenticate

Third-person singular simple present indicative form of authenticate

The quality of being genuine or not corrupted from the original, of having the same origin (or attribution, commitment, intention, etc.) as claimed.

Of the same origin as claimed; genuine. / Conforming to reality and therefore worthy of trust, reliance, or belief. / (music, of a Gregorian mode) Having the final as the lowest note of the mode.

(civil law) A collection of the Novels or New Constitutions of Justinian, by an anonymous author.