Meaning

noun the amount of electromagnetic radiation leaving or arriving at a point on a surface

noun the quality of being bright and sending out rays of light

noun an attractive combination of good health and happiness

originEtymology tree English radiant Proto-Indo-European *-yós Proto-Italic *-ios Old Latin -ios Latin -ius Latin -iader. Old French -ancebor. Middle English -aunce English -ance English radiance From radiant + -ance.

Etymology from Wiktionary, CC BY-SA 3.0