Definition of polyunsaturated in US English:



  • (of an organic compound, especially a fat or oil molecule) containing several double or triple bonds between carbon atoms. Polyunsaturated fats, which are usually of plant origin, are regarded as healthier in the diet than saturated fats.

    • ‘For example, polyunsaturated fats do much more than lower blood cholesterol levels.’
    • ‘You can only get these from polyunsaturated fats and oils, found in high quantities in nuts, fish, avocados, seeds and vegetable oils.’
    • ‘Autoxidation of the polyunsaturated fatty acids of flour lipids results in the formation of hydroperoxides, which are powerful oxidising agents.’
    • ‘Experts say the monounsaturated and polyunsaturated fats found largely in nuts have heart protective benefits.’
    • ‘We consume three main types of fats in our daily diet - saturated fats, monounsaturated fats and polyunsaturated fats.’