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luminosity

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Luminosity is defined as the condition of being bright or having light.

(noun)

An example of something with luminosity is the sun.

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See luminosity in Webster's New World College Dictionary

noun

the quality or condition of being luminous
pl. luminosities something luminous
brightness

Origin: ML luminositas

See luminosity in American Heritage Dictionary 4

noun pl. lu·mi·nos·i·ties

The condition or quality of being luminous.
Something luminous.
The ratio of luminous flux at a specific wavelength to the radiant flux at the same wavelength. Also called luminosity factor.

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