luminescence

[loo-muh-nes-uhns]
noun
1.
the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies.
2.
the light produced by such an emission.

Origin:
1885–90; < Latin lūmin- (see lumen) + -escence

luminescent, adjective
nonluminescence, noun
nonluminescent, adjective
unluminescent, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To luminescence
Collins
World English Dictionary
luminescence (ˌluːmɪˈnɛsəns)
 
n
physics
 a.  the emission of light at low temperatures by any process other than incandescence, such as phosphorescence or chemiluminescence
 b.  the light emitted by such a process
 
[C19: from Latin lūmen light]
 
lumi'nescent
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

luminescence
1889, from luminescent.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

luminescence lu·mi·nes·cence (lōō'mə-něs'əns)
n.

  1. The emission of light that does not derive energy from the temperature of the emitting body, as in fluorescence and bioluminescence.

  2. The light so emitted.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
luminescence   (l'mə-něs'əns)  Pronunciation Key 
  1. 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.

  2. The light produced in this way.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
To rate the nighttime luminescence of your neighborhood, compare the view from
  it to these star-magnitude charts.
Someone looked at solar effects other than luminescence.
In a laboratory the intensity of that burst of luminescence can easily be
  measured with a device called a photomultiplier.
The fact that snail's luminescence can be seen through its shell is a bonus.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;