polymer
noun [ C ] chemistry specialized uk/ˈpɒl.ɪ.mər/ us/ˈpɑː.lɪ.mɚ/
聚合物，聚合体
a chemical substance consisting of large molecules made from many smaller and simpler molecules
Many polymers, such as nylon, are artificial. 许多聚合物是人造的，比如说尼龙。
Proteins and DNA are natural polymers. 蛋白质和脱氧核糖核酸都是天然聚合体。