聚甲醛 jùjiǎquán polyformaldehyde Origin Definitions Defs Strokes Stroke Words Sentences Sents 聚 jù poly- (bound form) used in chemistry to indicate a polymer甲醛 jiǎquán formaldehyde (Organic chemistry) formaldehyde; a colorless, pungent, toxic gas used in manufacturing resins, plastics, and dyes, or as a disinfectant in aqueous solution