polyvinyl (n.)youdaoicibaDictYouDict[polyvinyl 词源字典]
1930, polymer of vinyl chloride. In chemistry, vinyl was used from 1863 as the name of a univalent radical derived from ethylene, from Latin vinum "wine" (see wine (n.)), because ethyl alcohol is the ordinary alcohol present in wine.[polyvinyl etymology, polyvinyl origin, 英语词源]