Etymology
Advertisement

luminosity (n.)

1630s, "quality of being luminous," from French luminosité (cognate with Medieval Latin luminositas "splendor") or else a native formation from luminous + -ity. Meaning "intensity of light in a color" (of a flame, spectrum, etc.) is from 1876. In astronomy, "intrinsic brightness of a heavenly body" (as distinguished from apparent magnitude, which diminishes with distance), attested from 1906.

Others are reading

Advertisement
Advertisement
Definitions of luminosity

luminosity (n.)
the quality of being luminous; emitting or reflecting light;
its luminosity is measured relative to that of our sun
Synonyms: brightness / brightness level / luminance / luminousness / light
From wordnet.princeton.edu