luminosity
noun
Forms luminosities
- noun (uncountable) the state of being luminous, or a luminous object; brilliance or radiance
- noun (physics) the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
- noun (astronomy) The rate at which a star radiates energy in all directions.
Synonyms
Etymology
Borrowed from French luminosité or else a native formation from luminous + -ity.
Webster’s 1913
- noun The quality or state of being luminous; luminousness.
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “luminosity”, CC BY-SA 4.0. Details