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phosphor Syllabification: phos·phor
Pronunciation: /ˈfäsfər/

Definition of phosphor in English:


1A synthetic fluorescent or phosphorescent substance, especially any of those used to coat the screens of cathode ray tubes.
Example sentences
  • Compounds of the element are also used to make phosphors that coat the screen of television tubes and CRTs (cathode ray tubes).
  • To obtain good colour pictures on a TV screen, you need phosphors that produce rich, pure primaries.
  • Fluorescent materials can be synthetic, such as phosphors, or occur in nature, for example, fluorescent minerals.
1.1 old-fashioned term for phosphorus.
Example sentences
  • The term "phosphor" obviously is employed as well for the chemical element discovered by a Hamburg alchemist, Hennig Brand, in 1669.


Early 17th century: from Latin phosphorus (see phosphorus).

Definition of phosphor in:
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