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chemiluminescence

[kem-uh-loo-muh-nes-uh ns] /ˌkɛm əˌlu məˈnɛs əns/
noun
1.
(in chemical reactions) the emission of light by an atom or molecule that is in an excited state.
Origin of chemiluminescence
1900-1905
1900-05; chemi- + luminescence
Related forms
chemiluminescent, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for chemiluminescence

chemiluminescence

/ˌkɛmɪˌluːmɪˈnɛsəns/
noun
1.
the phenomenon in which a chemical reaction leads to the emission of light without incandescence
Derived Forms
chemiluminescent, adjective
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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chemiluminescence in Science
chemiluminescence
  (kěm'ə-l'mə-něs'əns)   
The emission of light by a substance as a result of undergoing a chemical reaction that does not involve an increase in its temperature. Chemiluminescence usually occurs when a highly oxidized molecule, such as a peroxide, reacts with another molecule. The bond between the two oxygen atoms in a peroxide is relatively weak, and when it breaks the atoms must reorganize themselves, releasing energy in the form of light. Compare bioluminescence.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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