brightness
1. [ noun ] the location of a visual perception along the black-to-white continuum
Related terms: dullness light glint glare glitter luster radiance glint opalescence dazzle
2. [ noun ] (psychology) intelligence as manifested in being quick and witty
Synonyms: smartness cleverness
Related terms: intelligence
3. [ noun ] (physics) the quality of being luminous; emitting or reflecting light
Synonyms: light luminosity brightness_level luminousness luminance
Examples:

"its luminosity is measured relative to that of our sun"

Related terms: physical_property luminescence illuminance incandescence light bright dull
Similar spelling:   Brighton
  brighten
  Brightman
  bright_side
  bright_blue
  Brigitte
  brightly
  Brigette
  Broughton
  Brightwell
  brigate_rosse