brightness meaning and definition

BRIGHTNESS noun

Definition of brightness (noun)

1. the location of a visual perception along a continuum from black to white
   • antonym: dullness
2. intelligence as manifested in being quick and witty
   • synonyms: cleverness, smartness
3. the quality of being luminous; emitting or reflecting light
   • "its luminosity is measured relative to that of our sun"
   • synonyms: brightness level, light, luminance, luminosity, luminousness