乙酸根 yǐsuāngēn acetate Origin Definitions Defs Strokes Stroke Words Sentences Sents 乙酸 yǐsuān acetic acid acetic acid; ethanoic acid; a colorless liquid with a pungent smell that is the main component of vinegar根 gēn radical (chemistry) (chemistry) a group of atoms that behave as a single unit; a radical