dominant (adj.)youdaoicibaDictYouDict[dominant 词源字典]
mid-15c., from Middle French dominant (13c.), from Latin dominantem (nominative dominans), present participle of dominari (see domination). Music sense is from 1819. Sexual bondage sense by c. 1960. The noun is first recorded 1819, earliest in the musical sense.[dominant etymology, dominant origin, 英语词源]