luminosity

[ loo-muh-nos-i-tee ]
/ ˌlu məˈnɒs ɪ ti /
SEE SYNONYMS FOR luminosity ON THESAURUS.COM

noun, plural lu·mi·nos·i·ties.

luminance(def 2).
the 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.

Origin of luminosity

1625–35; < Latin lūminōs(us) luminous + -ity

OTHER WORDS FROM luminosity

non·lu·mi·nos·i·ty, noun self-lu·mi·nos·i·ty, noun

Words nearby luminosity

luminesce, luminescence, luminiferous, luminism, luminophore, luminosity, luminosity class, luminous, luminous efficacy, luminous efficiency, luminous emittance

Words related to luminosity

light, glow, brightness, luminance, fluorescence

Example sentences from the Web for luminosity

British Dictionary definitions for luminosity

luminosity
/ (ˌluːmɪˈnɒsɪtɪ) /

noun plural -ties

the condition of being luminous
something that is luminous
astronomy a measure of the radiant power emitted by a star
physics the attribute of an object or colour enabling the extent to which an object emits light to be observed Former name: brightness See also colour