cyanoacetylWiktionary 原文构词拆分cyano-前缀Dark blue-green in colour · (chemistry) derived from cyanogen or a cyanide / nitrile+acetyl词根/词干词源说明From cyano- + acetyl.释义（英文）名词 Noun(organic chemistry) The univalent radical NC-CH2-CO- derived from cyanoacetic acid