polymer (n.)youdaoicibaDictYouDict[polymer 词源字典]
a substance built from a large number of simple molecules of the same kind, 1855, probably from German Polymere (Berzelius, 1830), from Greek polymeres "having many parts," from polys "many" (see poly-) + meros "part" (see merit (n.)).[polymer etymology, polymer origin, 英语词源]