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piperonal

[pi-per-uh-nal, pahy-, pip-er-uh-]
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noun Chemistry.
  1. a white, crystalline, water-insoluble aldehyde, C8H6O3, which darkens on exposure to light: used chiefly in perfumery and organic synthesis.
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Origin of piperonal

First recorded in 1865–70; piper(ine) + -one + -al1
Also called piperonyl aldehyde, heliotropin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for piperonal

piperonal

noun
  1. a white fragrant aldehyde used in flavourings, perfumery, and suntan lotions. Formula: C 8 H 6 O 3Also called: heliotropin
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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