Meaning of “authenticate” in the English Dictionary

"authenticate" in British English

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authenticateverb [ T ]

uk /ɔːˈθen.tɪ.keɪt/ us /ɑːˈθen.t̬ə.keɪt/

(Definition of “authenticate” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"authenticate" in Business English

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authenticateverb [ T ]

uk /ɔːˈθentɪkeɪt/ us /ɑːˈθenṱɪ-/

to prove that something is real, true, or what people say it is:

Each of these signatures must be authenticated by a lawyer.
Holograms can be used to authenticate documents.

IT to prove that someone is a particular person:

A password is used to authenticate a user.
We offer electronic certificates that authenticate the identity of internet traders.
authentication
noun [ U ] /ɔːˌθentɪˈkeɪʃən/ /ɑːˌθenṱɪ-/

We needed to identify a data source that we could use for authentication.

(Definition of “authenticate” from the Cambridge Business English Dictionary © Cambridge University Press)

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