luminosity

About 1.19 uses per million words.

Meaning

1. noun the state of being luminous, or a luminous object; brilliance or radiance
2. noun the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
3. noun The rate at which a star radiates energy in all directions.

Similar words

luminousness luminance brightness light illumination brilliance lighting lightness radiance luster

Often followed by

of and function is in relation curve class functions

Word family

luminosities