›[I or T]to say in a formal or official way, usually in writing, that something is true or correct: [+ (that)]I hereby certify (that) the above information is true and accurate.[+ noun/adj]The driver was certified (as) dead on arrival at the hospital.The meat has been certified (as) fit for human consumption.Accepting and agreeingAccepting and agreeing reluctantlyApproving and approval›[T]to say officially that someone is mentally ill: As a young man, he had been certified and sent to a hospital for the mentally ill.Science of psychology and psychoanalysisMind and personalitycertification
/ˌsɜː.tɪ.fɪˈkeɪ.ʃən//ˌsɝː.t̬ə-/noun[U]Official documentsAccepting and agreeingAccepting and agreeing reluctantlyApproving and approval
You are looking at an entry to do with Accepting & agreeing, but you might be interested in these topics from the Expressing agreement & support topic area: