- authenticate UK US /ɔːˈθentɪkeɪt/ US /ɑːˈθenṱɪ-/ verb [T]► 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 /ɔːˌθentɪˈkeɪʃən/ US /ɑːˌθenṱɪ-/ noun [U]► »
We needed to identify a data source that we could use for authentication.
Financial and business terms. 2012.