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Luminosity

noun

Definitions

Noun
  1. 1
    the state of being luminous, or a luminous object; brilliance or radiance uncountable

    "They reported encountering a luminosity of great intensity and loving angelic beings."

  2. 2
    the quality of being luminous; emitting or reflecting light wordnet
  3. 3
    the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor countable, uncountable
  4. 4
    The rate at which a star radiates energy in all directions. countable, uncountable

    "We recognize the same pattern as in the left panel, with dM stars being much less frequent flarers than dMe stars of similar luminosity."

Etymology

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

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