Definitions
1.nounA point source from which radiation is emitted.
2.nounThe apparent origin, in the night sky, of a meteor shower.
3.nounA straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.
4.adjectiveRadiating light and/or heat."the radiant sun"
5.adjectiveEmitted as radiation.
6.adjectiveBeaming with vivacity and happiness."a radiant face"
7.adjectiveEmitting or proceeding as if from a center.
8.adjectiveGiving off rays; said of a bearing."the sun radiant; a crown radiant"
9.adjectiveHaving a ray-like appearance, like the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal flowers.