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English definition of “authenticate”

authenticate

verb [T] uk   /ɔːˈθen.tɪ.keɪt/ us    /ɑːˈθen.t̬ɪ-/
to prove that something is real, true, or what people say it is: They used carbon dating tests to authenticate the claim that the skeleton was two million years old.
authentication
noun [U] uk   /ɔːˌθen.tɪˈkeɪ.ʃən/ us    /ɑːˌθen.t̬ɪ-/
(Definition of authenticate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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