radiance in WordNet English dictionary

1. the quality of being bright and sending out rays of light
   radiance  radiancy  shine  effulgence  refulgence  refulgency 
   
2. the amount of electromagnetic radiation leaving or arriving at a point on a surface
   radiance  glow  glowing 
   
3. an attractive combination of good health and happiness
   "the radiance of her countenance"
   radiance