phosphor

play
noun phos·phor \ˈfäs-fər, -ˌfȯr\
variants: or less commonly

phosphore

play \ˈfäs-ˌfȯr, -fər\

Definition of phosphor

  1. 1 :  a phosphorescent substance

  2. 2 :  a luminescent substance that emits light when excited by radiation (such as electrons) and is used especially in fluorescent lamps and cathode-ray tubes

Recent Examples of phosphor from the Web

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Origin and Etymology of phosphor

Latin phosphorus, from Greek phōsphoros, literally, light bringer, from phōsphoros light-bearing, from phōs light + pherein to carry, bring — more at fancy, bear


First Known Use: 1706


Medical Dictionary

phosphor

play
noun phos·phor \ˈfäs-fər, -ˌfȯ(ə)r\
variants: also

phosphore

\-ˌfō(ə)r, -ˌfȯ(ə)r, -fər\play

Medical Definition of phosphor

  1. :  a phosphorescent substance; specifically :  a substance that emits light when excited by radiation


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