聚四氟乙烯 Traditional form: 聚四氟乙烯 Pinyin (reading): jùsìfúyǐxī Definitions: polytetrafluoroethylene (PTFE), trademarked as Teflon Characters: 聚 - to assemble, to collect, to meet 四 - four 氟 - fluorine 乙 - second; 2nd heavenly stem 烯 - alkene Traditional characters: 聚 - to assemble, to collect, to meet 四 - four 氟 - fluorine 乙 - second; 2nd heavenly stem 烯 - alkene