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luminosity
[loo-muh-nos-i-tee]
noun
plural
luminositiesthe quality of being intellectually brilliant, enlightened, inspired, etc..
The luminosity of his poetry is unequaled.
something luminous.
Astronomy.the brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic brightness 23 times as great as that of the sun.
Also called luminosity factor.Optics.the brightness of a light source of a certain wavelength as it appears to the eye, measured as the ratio of luminous flux to radiant flux at that wavelength.
luminosity
/ ˌːɪˈɒɪɪ /
noun
the condition of being luminous
something that is luminous
astronomy a measure of the radiant power emitted by a star
Former name: brightness.physics the attribute of an object or colour enabling the extent to which an object emits light to be observed See also colour
Other Word Forms
- nonluminosity noun
- self-luminosity noun
Word History and Origins
Origin of luminosity1
Example Sentences
The Guardian's three star review said his "words glitter with feeling" and added that he "singularly shines, his luminosity putting the others slightly in the shade".
She found a relationship between their variation period, or pulse, and their intrinsic brightness or luminosity.
The most striking feature of the renovated cathedral is the luminosity of the stonework.
The M dwarfs are low-mass stars that have a mere fraction of the Sun's mass and luminosity.
The annual Perseid meteor shower requires us to leave behind our light-polluted cities for darker night skies that allow us to see the full luminosity of the celestial attraction.
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