radiant
adjective
1
Radiating light and/or heat.
"the radiant sun"
2
Emitted as radiation.
3
Beaming with vivacity and happiness.
"a radiant face"
4
Strikingly beautiful.
5
Emitting or proceeding as if from a center.
6
Giving off rays.
"the sun radiant"
7
Having a ray-like appearance, like the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal flowers.
noun
1
A point source from which radiation is emitted.
2
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.
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