Radiant

Adjective

  • Emitted as radiation.
  • (heraldry) Giving off rays; said of a bearing.

    "the sun radiant;  a crown radiant"

  • Radiating light and/or heat.

    "the radiant sun"

  • Emitting or proceeding as if from a center.
  • Beaming with vivacity and happiness.

    "a radiant face"

  • (botany) 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

  • (astronomy) The apparent origin, in the night sky, of a meteor shower.
  • A point source from which radiation is emitted.
  • A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

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