Polyunsaturate (verb)

To add more unsaturated fatty acids to a food or substance, typically for health benefits.

Origin:

From poly- (many) + unsaturate (to add more unsaturated fatty acids to).

Examples:

1. The recipe called for using vegetable oil that had been polyunsaturated.
2. The nutritionist recommended polyunsaturating the diet with foods like nuts and fatty fish.