Meaning

• A point source from which radiation is emitted.

• The apparent origin, in the night sky, of a meteor shower.

• A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

Meaning

• Radiating light and/or heat.

  "the radiant sun"

• Emitted as radiation.

• Beaming with vivacity and happiness.

  "a radiant face"

• Emitting or proceeding as if from a center.

• Giving off rays; said of a bearing.

  "the sun radiant;  a crown radiant"

• Having a ray-like appearance, like the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal flowers.