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2 definitions found
 for luminosity
From The Collaborative International Dictionary of English v.0.48 :

  Luminosity \Lu`mi*nos"i*ty\, n.
     The quality or state of being luminous; luminousness.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: the quality of being luminous; emitting or reflecting
           light; "its luminosity is measured relative to that of our
           sun" [syn: luminosity, brightness, brightness level,
           luminance, luminousness, light]

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