| 单词 | piperonal |
| 释义 | piperonal[ pi-per-uh-nal, pahy-, pip-er-uh- ] / pɪˈpɛr əˌnæl, paɪ-, ˈpɪp ər ə- / noun Chemistry.a white, crystalline, water-insoluble aldehyde, C8H6O3, which darkens on exposure to light: used chiefly in perfumery and organic synthesis. Also called piperonyl aldehyde, heliotropin. Origin of piperonalFirst recorded in 1865–70; piper(ine) + -one + -al1 Words nearby piperonalpipe rack, piperazine, piperidine, piperine, pipe roll, piperonal, piperonyl butoxide, pipe snake, pipes of Pan, pipestem, pipestone Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for piperonalpiperonal / (ˈpɪpərəʊˌnæl) / nouna white fragrant aldehyde used in flavourings, perfumery, and suntan lotions. Formula: C 8 H 6 O 3Also called: heliotropin Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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