piperonal / pɪˈpɛr əˌnæl, paɪ-, ˈpɪp ər ə- /

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piperonal 的定义

n. 名词 noun

Chemistry.

  1. a white, crystalline, water-insoluble aldehyde, C8H6O3, which darkens on exposure to light: used chiefly in perfumery and organic synthesis.