聚丙烯 Traditional form: 聚丙烯 Pinyin (reading): jùbǐngxī Definitions: polypropylene Characters: 聚 - to assemble, to collect, to meet 丙 - third; 3rd heavenly stem 烯 - alkene Traditional characters: 聚 - to assemble, to collect, to meet 丙 - third; 3rd heavenly stem 烯 - alkene