piperonal /'pipәrәnæl/ 📖 中文释义 n. [化]胡椒醛, 洋茉莉醛( 亦作piperonyl aldehyde) 📘 English Definition(英文释义) n. A white crystalline substance obtained by oxidation ofpiperic acid, and regarded as a complex aldehyde. ← piperocaine hydrochloride piperonal bis acetal →