Definition of "certificate"

A document containing a certified statement.  examples

A document evidencing ownership or debt.  examples

(education) A document serving as evidence that a person has completed an educational course, issued either by an institution not authorised to grant diplomas, or to a student not qualifying for a diploma.  examples

(computing theory) The information needed in order to verify a positive answer to a problem.  examples

(computing) Ellipsis of public key certificate.  examples

(Britain, Ireland) A motion picture age rating.  examples

To supply with a certificate, especially following certification.  examples