Saturation refers to whether or not all available positions for bonding with hydrogen atoms on carbon atoms in hydrocarbon chains are filled. In biological molecules like fatty acids, saturation affects properties such as fluidity and melting point.
Related terms
Monounsaturated: A type of fatty acid with one double bond between carbon atoms in its hydrocarbon chain.
Polyunsaturated: A type of fatty acid with multiple double bonds between carbon atoms in its hydrocarbon chain.
Hydrogenation: The process of converting unsaturated fats into saturated fats by adding hydrogen.