Definition of fluorescence noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌflɔːˈresns//
    ; NAmE NAmE//ˌflɔːˈresns//
    ; BrE also BrE//ˌflʊəˈresns//
    ; NAmE also NAmE//ˌflʊˈresns//
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  1. 1bright light produced by some forms of radiation X-ray fluorescence
  2. 2the quality of a colour, material, etc. that appears very bright when light shines on it, so it can be seen in the dark
  3. compare phosphorescence