cinnamic acid

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cinnamic acid

n.
A fragrant white crystalline acid, C9H8O2, obtained from cinnamon or from balsams such as storax or made synthetically and used chiefly to manufacture perfumery compounds.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cinnamic acid

(sɪˈnæmɪk)
n
(Elements & Compounds) a white crystalline water-insoluble weak organic acid existing in two isomeric forms; 3-phenylpropenoic acid. The trans- form occurs naturally and its esters are used in perfumery. Formula: C6H5CH:CHCOOH
[C19: from cinnam(on) + -ic; from its being found in cinnamon oil]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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