carboxymethylWiktionary 原文构词拆分carboxy词根/词干+methyl词根/词干词源说明From carboxy + methyl.释义（英文）名词 Noun(organic chemistry) The univalent radical -CH2-COOH derived from acetic acid词族派生词（5）carboxymethylationcarboxymethylcellulosecarboxymethyl cellulosecarboxymethyl glucosecarboxymethyllysine