1. 容光焕发；喜气洋洋
Radiance is great happiness which shows in someone's face and makes them look very attractive.
2. 光辉；发光；闪烁
Radiance is a glowing light shining from something.
1. the quality of being bright and sending out rays of light
Synonym: radiancyshineeffulgencerefulgencerefulgency
2. the amount of electromagnetic radiation leaving or arriving at a point on a surface
3. an attractive combination of good health and happiness
e.g. the radiance of her countenance