Authentication

[ɔː,θentɪ'keɪʃən] or [ɔ,θɛntɪ'keʃən]

(noun.) validating the authenticity of something or someone.

(noun.) a mark on an article of trade to indicate its origin and authenticity.

Checker: Nathan--From WordNet

n. Verification, attestation, seal, confirmation.

Edited by Lelia