polymethyleneWiktionary 原文构词拆分poly-前缀many · polymer+methylene词根/词干词源说明From poly- + methylene.释义（英文）名词 Noun(obsolete, chemistry) Any organic compound having a general formula (CH2)n(chemistry, in combination) Any of many organic compounds either having a polymeric structure of repeating -CH2- groups词族相关词（2）polymethenepolyethylene