D defs.my
Entry 2 senses Webster, 1913

authentication

· IPA /ɔːˌθɛntɪˈkeɪʃn̩/
01 n. a mark on an article of trade to indicate its origin and authenticity.
  1. 1.
    a mark on an article of trade to indicate its origin and authenticity.
  2. 2.
    validating the authenticity of something or someone.
Syn. hallmark, assay-mark. — Syn. -- certification.