noun, plural: polyunsaturated fats
A type of fat wherein the carbon chain contains more than one double or triple bond. It is believed to be an essential dietary fat because it helps control cholesterol.
Polyunsaturated fats include the essential fatty acids, omega fatty acids, and linoleic acids. They are found chiefly in fish, seeds, bananas, nuts, and vegetable oils.
Word origin: poly- (many)