polyunsaturated /ˌpɑːliˌʌnˈsætʃəˌreɪtəd/ adjective /ˌpɑːliˌʌnˈsætʃəˌreɪtəd/
adjective
Learner's definition of POLYUNSATURATED
technical
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used to describe a type of oil or fat that is found especially in nuts and fish and that is better for your health than saturated fats and trans fats(油脂)多不饱和的 — compare monounsaturated, unsaturated