- polyunsaturated fatty acid - an unsaturated fatty acid whose carbon chain has more than one double or triple valence bond per molecule; found chiefly in fish and corn and soybean oil and safflower oil
--1 is a kind of unsaturated fatty acid
--1 has particulars:omega-3 fatty acid, omega-3; omega-6 fatty acid, omega-6; linoleic acid, linolic acid