合成橡胶 héchéngxiàngjiāo synthetic rubber Origin Definitions Defs Strokes Stroke Words Sentences Sents 合成 héchéng adjectivenoun synthetic made by chemical synthesis rather than of natural origin, such as fabrics or rubber; incorporating橡胶 橡膠 xiàngjiāo noun rubber rubber; caoutchouc; a highly elastic polymer that is waterproof, airtight, and non-conductive