radiant


radiant

adjective

  1. emitting rays of light; shining; bright: the radiant sun; radiant colors.
  2. bright with joy, hope, etc.: radiant smiles; a radiant future.
  3. Physics. emitted or propagated by radiation.
  4. Heraldry.
    1. noting a partition line having a series of flamelike indentations formed by ogees joined in zigzags; rayonny.
    2. (of a charge, as an ordinary) having an edge or edges so formed.

noun

  1. a point or object from which rays proceed.
  2. Astronomy. the point in the heavens from which a shower of meteors appears to radiate.
  3. a refractory absorbing and radiating heat from the flames of a gas fireplace or the like.

adjective

  1. sending out rays of light; bright; shining
  2. characterized by health, intense joy, happiness, etca radiant countenance
  3. emitted or propagated by or as radiation; radiatedradiant heat
  4. sending out heat by radiationa radiant heater
  5. physics (of a physical quantity in photometry) evaluated by absolute energy measurementsradiant flux; radiant efficiency Compare luminous

noun

  1. a point or object that emits radiation, esp the part of a heater that gives out heat
  2. astronomy the point in space from which a meteor shower appears to emanate
adj.

mid-15c., from Middle French radiant and directly from Latin radiantem (nominative radians) “beaming, shining,” present participle of radiare “to beam, shine” (see radiation). Of beauty, etc., first attested c.1500. Related: Radiantly.

n.

“point or object from which light radiates,” 1727; see radiant (adj.). In astronomy, of meteor showers, from 1864.

adj.

  1. Emitting heat or light.
  2. Consisting of or emitted as radiation.

n.

  1. A point from which light radiates to the eye.

Adjective

  1. Transmitting light, heat, or other radiation. Stars, for example, are radiant bodies.
  2. Consisting of or transmitted as radiation.

Noun

  1. The apparent celestial origin of a meteor shower. For example, a point in the constellation Gemini is the radiant of the Geminid meteor shower.

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