Normally poly means many, but, in the case of polyunsaturated fat, it can mean only two. Polyunsaturated fats have two or more pairs of double bonds and, therefore, lack four or more hydrogen atoms. Polyunsaturated fats are liquid at room and fridge temperature. The two polyunsaturated fats found most frequently in our food are double unsaturated linoleic acid, with two double bonds, also called omega-6; and triple unsaturated alpha-linolenic acid, with three double bonds, also called omega-3.
