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Meaning of fluorescence

fluo•res•cence

Pronunciation: (floo-res'uns, flô-, flō-), [key]
— n. Physics, Chem.
  1. the emission of radiation, esp. of visible light, by a substance during exposure to external radiation, as light or x-rays. Cf. phosphorescence (def. 1).
  2. the property possessed by a substance capable of such emission.
  3. the radiation so produced.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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