Certificate
来自Big Physics
late Middle English (in the sense ‘certification, attestation’): from French certificat or medieval Latin certificatum, from certificare (see certify).
wiktionary
From French certificat.
etymonline
certificate (n.)
early 15c., "action of certifying," from French certificat, from Medieval Latin certificatum "thing certified," noun use of neuter past participle of certificare "to make certain" (see certify). Of documents of certification, testifying to the truth of the facts stated, from mid-15c.; especially a signed document attesting to someone's authorization to practice or do stated things (1540s).
