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Noun: brightness  brIt-nus
  1. The location of a visual perception along a continuum from black to white
  2. Intelligence as manifested in being quick and witty
    - cleverness, smartness
  3. The quality of being luminous; emitting or reflecting light
    "its brightness is measured relative to that of our sun";
    - luminosity, brightness level, luminance, luminousness, light

See also: bright, dull

Type of: intelligence, light, lightness, physical property

Antonym: dullness

Encyclopedia: Brightness