predominant (adj.)youdaoicibaDictYouDict[predominant 词源字典]
1570s, from Middle French prédominant (14c.), from Medieval Latin *praedominantem (nominative praedominans), present participle of *praedominare, from Latin prae- "before" (see pre-) + dominari "to rule" (see dominate). Related: Predominantly.[predominant etymology, predominant origin, 英语词源]