| polyunsaturated | (adj) (of long-chain carbon compounds especially fats) having many unsaturated bonds |
| polyunsaturated fat | (n) a class of fats having long carbon chains with many double bonds unsaturated with hydrogen atoms; used in some margarines; supposedly associated with low blood cholesterol |
| polyunsaturated fatty acid | (n) 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 |