coherent (adj.)youdaoicibaDictYouDict[coherent 词源字典]
1550s, from Middle French cohérent (16c.), from Latin cohaerentem (nominative cohaerens), present participle of cohaerere "cohere," from com- "together" (see co-) + haerere "to stick" (see hesitation).[coherent etymology, coherent origin, 英语词源]