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English definition of “authenticate”

authenticate

verb [T]     /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.Proving and disproving authentication     /ɔːˌθen.tɪˈkeɪ.ʃən/ US  /ɑːˌθen.t̬ɪ-/ noun [U] Proving and disproving
(Definition of authenticate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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