polyunsaturated

(без степеней сравнения)Of or relating to long chain organic compounds that have multiple double bonds; polyunsaturated fatty acids are essential to human nutrition.

(of long-chain carbon compounds especially fats) having many unsaturated bonds

(без степеней сравнения)Having a chemical structure that does not easily change into cholesterol (a substance containing a lot of fat thought to be an important cause of heart disease).