Meaning of chemiluminescence

chem•i•lum•i•nes•cence

Pronunciation: (kem"u-l"mu-nes'uns), [key]
— n.
  1. (in chemical reactions) the emission of light by an atom or molecule that is in an excited state.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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