Definition of LUMINOSITY

luminosity

Plural: luminosities

Noun

  • the quality of being luminous; emitting or reflecting light
    • "its luminosity is measured relative to that of our sun"
  • the state of being luminous, or a luminous object; brilliance or radiance
  • the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
  • The rate at which a star radiates energy in all directions.

Origin / Etymology

Borrowed from French luminosité or else a native formation from luminous + -ity.

Synonyms

brightness, brightness level, light, luminance, luminousness

Scrabble Score: 15

luminosity: valid Scrabble (US) TWL Word
luminosity: valid Scrabble Word in Merriam-Webster MW Dictionary
luminosity: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 18

luminosity: valid Words With Friends Word