(in chemical reactions) the emission of light by an atom or molecule that is in an excited state.
- chemical warfare,
- chemical weathering,
- chemin de fer,
Origin of chemiluminescence
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Examples from the Web for chemiluminescence
Moreover, as we have seen, chemiluminescence is essentially an oxyluminescence, since oxygen is necessary for the reaction.The Nature of Animal Light|E. Newton Harvey
the phenomenon in which a chemical reaction leads to the emission of light without incandescence
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
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.
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