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capsaicin

[kap-sey-uh-sin]
noun
  1. a colorless, crystalline, bitter compound, C18H27NO3, present in capsicum.
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Origin of capsaicin

1885–90; earlier capsicine, equivalent to capsic(um) + -ine2; refashioned with capsa- (< Latin: box) for caps- and -in2 for -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for capsaicin

capsaicin

noun
  1. a colourless crystalline bitter alkaloid found in capsicums and used as a flavouring in vinegar and pickles. Formula: C 18 H 27 O 3 N
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Word Origin

C19 capsicine, from capsicum + -ine ²; modern form refashioned from Latin capsa box, case + -in
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

Word Origin and History for capsaicin

from capsicum, from which it is extracted + chemical suffixes.

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Online Etymology Dictionary, © 2010 Douglas Harper

capsaicin in Medicine

capsaicin

(kăp-sāĭ-sĭn)
n.
  1. A colorless, pungent, crystalline compound that is derived from the capsicum pepper and is a strong irritant to skin and mucous membranes.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

capsaicin in Science

capsaicin

[kăp-sāĭ-sĭn]
  1. A colorless, extremely pungent, crystalline compound that is the primary active principle producing the heat of red peppers. It is a strong irritant to skin and mucous membranes and is used in medicine as a topical analgesic. Capsaicin is highly stable, retaining its potency for long periods and despite cooking or freezing. Chemical formula: C18H27NO3.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.