polyunsaturated fatty acid

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a fatty acid, such as arachidonic acid, that contains two or more carbon to carbon double bonds

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun 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