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phosphor

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phosphor

Main Entry:: phos·phor
Pronunciation:: \ˈfäs-fər, -ˌfȯr\
Variant(s):: also phos·phore \-ˌfȯr, -fər\
Function:: noun
Etymology:: Latin phosphorus, from Greek phōsphoros, literally, light bringer, from phōsphoros light-bearing, from phōs light + pherein to carry, bring — more at fancy, bear
Date:: 1705

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

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