Luminosity
n.calm, joyfulprofessional
Meaning 1
The amount or quality of light emitted by a source.
Reach for it when discussing brightness scientifically or describing radiant visual presence
Astronomers calculated the star's luminosity from its distance and flux.
Choose between these
4- everyday
perceived intensity of light is the plain subject
not when Brightness is broader and may refer to reflected light.
- professional
light output
plain technical wording serves a practical specification
not when Light output may use several measures and lacks astronomical precision.
- professional
luminance
light intensity per apparent area in a direction is technically meant
not when Luminance is not the same physical quantity as total luminosity.
- literary
the impression of light streaming outward is central
not when Radiance is descriptive rather than a measurable physical property.
Meaning 2
A quality of clear, radiant brightness in art or appearance.
Reach for it when praising a glowing visual effect in elevated criticism
Thin layers of paint gave the portrait unusual luminosity.
Choose between these
2- warm
soft visible brightness is the artistic effect
not when Glow can be vague and does not capture overall luminous quality.
- literary
intense sparkling brightness deserves emphasis
not when Brilliance is stronger and can imply sharpness rather than soft luminosity.
Said against
3- dimness
- darkness
- dullness
It naturally appears in
3- stellar luminosity
Stellar luminosity helps scientists compare stars of different distances.
- apparent luminosity
Dust reduced the galaxy's apparent luminosity.
- sense of luminosity
Pale gold created a sense of luminosity around the figures.
Where this comes from
- merriam-webster, noun sense 1 opens in a new tab for meaning 1 · retrieved 2026-07-26
- merriam-webster, noun sense 2 opens in a new tab for meaning 2 · retrieved 2026-07-26
The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.