noun. The condition or quality of being luminous.

noun. Something luminous.

noun. The ratio of luminous flux at a specific wavelength to the radiant flux at the same wavelength.

noun. The quality of being luminous or bright; luminousness; the radiation or reflection of light.

noun. Specifically, the intensity of light in a color, measured photometrically.

noun. In botany, phosphorescence.

noun. The quality or state of being luminous; luminousness.

noun. the state of being luminous, or a luminous object; brilliance or radiance

noun. the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor

noun. the rate at which a star radiates energy in all directions

noun. the quality of being luminous; emitting or reflecting light

"The word luminosity describes the nature of celestial light, and the music of composer James Whitbourn is a celebration of that light: peaceful, radiant and clear."

physical property  

glow  illuminance  illumination  incandescence  luminescence  

blob  blur  brilliancy  clarity  cloudland  

blaze  bright  brightness  brilliance  dazzle