coadjutoryoudaoicibaDictYouDict[coadjutor 词源字典]
"A bishop appointed to assist and often to succeed a diocesan bishop", Late Middle English: via Old French from late Latin coadjutor, from co- (from Latin cum 'together with') + adjutor 'assistant' (from adjuvare 'to help').[coadjutor etymology, coadjutor origin, 英语词源]