luminescence [ loo-m uh- nes- uh ns ] SHOW IPA / ˌlu məˈnɛs əns / PHONETIC RESPELLING noun the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies. the light produced by such an emission. Nearby words luminaria
luminosity Origin of luminescence 1885–90;
-escence Related forms lu·mi·nes·cent, adjective non·lu·mi·nes·cence, noun non·lu·mi·nes·cent, adjective un·lu·mi·nes·cent, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for luminescence
And, ironically, in the darkness, he sees the
luminescence of the jungle around him.
Apparently there is no rhyme or reason in the distribution of
luminescence throughout the plant or animal kingdom.
His left hand fell upon Assha's shoulder, turning the man half around as Ross, too, stepped upon the patch of
luminescence that clothed Norhala brightened, deepening the darkness.
In adaptation to the darkness, in which there is only
luminescence that eyes could use, there is a great development of tactility.
Thus combustion, respiration and
luminescence of flesh or wood were early recognized as related phenomena. British Dictionary definitions for luminescence noun physics the emission of light at low temperatures by any process other than incandescence, such as phosphorescence or chemiluminescence the light emitted by such a process Derived Forms luminescent, adjective Word Origin for luminescence
C19: from Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for luminescence n.
1884, from Latin
lumen (genitive luminis) "light" (see luminous) + -escence. Fluorescence and Phosphorescence -- Prof. E. Wiedmann has made a new study of these phenomena. He proposes the general name luminescence for evolutions of light which do not depend on the temperature of the substance concerned. ["Photographic News," April 20, 1888]
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for luminescence n. The emission of light that does not derive energy from the temperature of the emitting body, as in fluorescence and bioluminescence. The light so emitted.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for luminescence The emission of light as a result of the excitation of atoms by energy other than heat. Bioluminescence, fluorescence, and phosphorescence are examples of luminescence that can be produced by biological or chemical processes. The light produced in this way.
The American Heritage® Science Dictionary
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