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polyunsaturated

adjective
 
 
/ˌpɒl.i.ʌnˈsætʃ.ər.eɪ.tɪd/ US  /ˌpɑː.li.ʌnˈsætʃ.ə.reɪ.t̬ɪd/ specialized

Definition

describes a fat or oil that has a chemical structure that does not easily change into cholesterol (= a substance containing a lot of fat that can cause heart disease) because it contains several double bonds: polyunsaturated margarine/vegetable oil → See also monounsaturatedFats and oils in food and cookingThe state of matter
(Definition of polyunsaturated adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of polyunsaturated