Home/polyenepolyene/pol-ee-een/US // ˈpɒl iˌin //UK // (ˈpɒlɪˌiːn) //多烯,聚烯,聚烯烃,多烯类Definitionsn.名词 noun1 Chemistry.: a hydrocarbon containing two or more double bonds, often conjugated.Level 4Browse all words →