1. radiating or as if emitting light.
- a radiant smile
2. (of a person) expressing happiness.
Sentences with radiant as an adjective:
- the radiant sun
- a radiant face
- the sun radiant; a crown radiant
1. A point source from which radiation is emitted.
2. (astronomy) The apparent origin, in the night sky, of a meteor shower.
3. A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.