corn oil - oil from the germs of corn grains

soyabean oil, soybean oil - oil from soya beans

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

flaxseed oil, linseed oil - a drying oil extracted from flax seed and used in making such things as oil paints