omega-3 - a polyunsaturated fatty acid whose carbon chain has its first double valence bond three carbons from the beginningalpha-linolenic acid - a polyunsaturated fatty acid with 18 carbon atoms; the only omega-3 fatty acid found in vegetable products; it is most abundant in canola oil; a fatty acid essential for nutrition 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 docosahexaenoic acid - an omega-3 fatty acid with 22 carbon atoms; found in fish (especially tuna and bluefish) eicosapentaenoic acid - an omega-3 fatty acid with 20 carbon atoms; found in fish (especially tuna and bluefish) |