English Explanatory Dictionary

luminosity

English dictionary entry

Meanings

noun
  1. the state of being luminous, or a luminous object; brilliance or radiance
  2. the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
  3. The rate at which a star radiates energy in all directions.

Pronunciation

LL-Q1860 (eng)-Flame, not lame-luminosity.wav

Word forms

luminosity luminosities

Etymology

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

Derived words

Eddington luminosity high-luminosity low-luminosity luminosity distance luminosity function nonluminosity overluminosity solar luminosity superluminosity underluminosity
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