不饱和 bùbǎohé unsaturated Origin Definitions Defs Strokes Stroke Words Sentences Sents 不饱和脂肪酸 bùbǎohézhīfángsuān unsaturated fatty acid 多元不饱和脂肪酸 duōyuánbùbǎohézhīfángsuān polyunsaturated fatty acid A type of fat molecule with two or more double bonds in its carbon chain, found primarily in vegetable oils.