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luminescence Hear it!

luminescence definition

lu·mi·nes·cence (lo̵̅o̅′mə nes′əns)

noun

any giving off of light caused by the absorption of radiant or corpuscular energy and not by incandescence; any cold light; specif., fluorescence or phosphorescence occurring in various chemical, biological, electrical, etc. processes at relatively low temperatures

Etymology: < L lumen, light + -escence

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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