英语词源字典 - 在线词源网站

certificate (n.)[certificate 词源字典]: early 15c., "action of certifying," from French certificat, from Medieval Latin certificatum "thing certified," noun use of neuter past participle of certificare (see certify). Of documents, from mid-15c., especially a document which attests to someone's authorization to practice or do something (1540s).[certificate etymology, certificate origin, 英语词源]
certify (v.): mid-14c., "to declare the truth of," also "to vouch for or confirm" (an official record, etc.), from Old French certefiier "make certain, witness the truth of" (12c.), from Late Latin certificare "to certify, to make certain," from Latin certus (see certain) + root of facere "to make, do" (see factitious). Also used in Middle English in broader senses of "inform, give notice; instruct, to direct; to designate." Related: Certified; certifying. Certified public accountant attested from 1896.
certiorari: legal Latin, "to be certified, to be informed or shown," from a word figuring in the opening phrase of such writs from superior to inferior courts seeking the records of a case. Passive present infinitive of certorare "to certify, inform," from certior, comp. of certus "sure" (see certain).
vowel (n.): c. 1300, from Old French voieul (Modern French voyelle), from Latin vocalis, in littera vocalis, literally "vocal letter," from vox (genitive vocis) "voice" (see voice (n.)). Vowel shift in reference to the pronunciation change between Middle and Modern English is attested from 1909. The Hawaiian word hooiaioia, meaning "certified," has the most consecutive vowels of any word in current human speech; the English record-holder is queueing.