authenticate

 
Pronunciation: /ɔːˈθɛntɪkeɪt/

verb

[with object]
  • prove or show (something) to be true, genuine, or valid: they were invited to authenticate artefacts from the Italian Renaissance
  • [no object] Computing (of a user or process) have one’s identity verified: it only accepts commands from users who have authenticated as ‘clients’

Derivatives

authentication

Pronunciation: /-ˈkeɪʃ(ə)n/
noun

authenticator

noun

Origin:

early 17th century: from medieval Latin authenticat- 'established as valid', from the verb authenticare, from late Latin authenticus 'genuine' (see authentic)