luminosity

US /ˌluːmɪˈnɒsəti/

UK /ˌlu:mɪ'nɒsətɪ/

B2

other

  • The quality of being luminous; brightness.
  • (Color science) The intensity of light emitted from an object.
  • (Physics) The total amount of energy emitted by a star or other celestial object per unit of time.

noun

  • Producing or giving off a large amount of light