Identification.
Identifier.
A protocol serving to identify the user of a particular TCP connection, used especially on IRC networks.
A brief audio or audiovisual sequence serving to identify the broadcaster.
Diligent; persistent.
The act of verifying.
The state of being verified.
Confirmation; authentication.
A formal phrase used in concluding a plea, to denote confirmation by evidence.
The operation of testing the equation of a problem, to see whether it truly expresses the conditions of the problem.