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2 definitions found
 for luminance
From WordNet (r) 3.0 (2006) :

  luminance
      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]

From The Free On-line Dictionary of Computing (18 March 2015) :

  brightness
  luminance
  tone
  value
  
      (Or "tone", "luminance", "value", "luminosity",
     "lightness") The coordinate in the HSB colour model that
     determines the total amount of light in the colour.  Zero
     brightness is black and 100% is white, intermediate values are
     "light" or "dark" colours.
  
     The other coordinates are hue and saturation.
  
     (1999-07-05)
  

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