phosphor

phosphor

[fos-fer, -fawr]
noun
1.
any of a number of substances that exhibit luminescence when struck by light of certain wavelengths, as by ultraviolet.
2.
Literary. a phosphorescent substance.
adjective
3.
Archaic. phosphorescent.

Origin:
1625–35; < French phosphore < Latin Phōsphorus Phosphor

Dictionary.com Unabridged

Phosphor

[fos-fer, -fawr]
noun
the morning star, especially Venus.
Also, Phosphore [fos-fawr, -fohr] , Phosphorus.


Origin:
1625–35; < Latin Phōsphorus < Greek Phōsphóros the morning star, literally, the light-bringing one, equivalent to phôs light + -phoros bringing; see -phorous

phosphor-

variant of phosphoro- before a vowel: phosphorate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
phosphor (ˈfɒsfə)
 
n
a substance, such as the coating on a cathode-ray tube, capable of emitting light when irradiated with particles or electromagnetic radiation
 
[C17: from French, ultimately from Greek phōsphorosphosphorus]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

phosphor- pref.
Variant of phosphoro-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
phosphor   (fŏs'fər)  Pronunciation Key 
Any of various substances that can emit light after absorbing some form of radiation. Television screens and fluorescent lamp tubes are coated on the inside with phosphors. See Note at cathode-ray tube.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

phosphor

solid material that emits light, or luminesces, when exposed to radiation such as ultraviolet light or an electron beam. Hundreds of thousands of phosphors have been synthesized, each one having its own characteristic colour of emission and period of time during which light is emitted after excitation ceases. When certain phosphors luminesce from electron excitation, the process is called electroluminescence, and these phosphors are used in the production of television screens and computer monitors. Phosphors excited by ultraviolet, visible, and infrared radiation are used principally in the so-called fluorescent lamps commonly employed for general illumination

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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