Definition of radiant

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< radiance

radiant energy >

ra·di·ant    (rd-nt) KEY  

ADJECTIVE:

1. Emitting heat or light.
2. Consisting of or emitted as radiation: radiant heat.
3. 1. Filled with light; bright.
   2. Glowing; beaming. See Synonyms at bright.

NOUN:

1. An object or a point from which light or heat rays are emitted.
2. Astronomy The apparent celestial origin of a meteoric shower.

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ETYMOLOGY:
Middle English, from Latin radins , radiant- present participle of radire, to radiate ; see radiate

OTHER FORMS:
radi·ant·ly (Adverb)

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