polyunsaturated fatty acid
Technical term in biochemistry and nutrition. Refers to fatty acids with more than one double bond in the carbon chain.
Polyunsaturated fatty acids are abundant in fish and vegetable oils.
Compound of 多価 (multivalent, poly-), 不飽和 (unsaturated), and 脂肪酸 (fatty acid). A direct calque from English 'polyunsaturated fatty acid'.