羧甲司坦 suōjiǎsītǎn carbocysteine Origin Definitions Defs Strokes Stroke Words Sentences Sents 羧 suō phonetic carboxyl (bound form) carboxyl radical; used in chemistry terms such as 羧基 suōjī or 羧酸 suōsuān甲 jiǎ phonetic 司 sī phonetic 坦 tǎn phonetic