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RADIANT - Definiția din dicționar

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Ra"di*ant (r&ā;"dĭ*&aitalic_;nt), a. [L. radians, -antis, p. pr. of radiare to emit rays or beams, fr. radius ray: cf. F. radiant. See Radius, Ray a divergent line.] 1. Emitting or proceeding as from a center; resembling rays; radiating; radiate.
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2. Especially, emitting or darting rays of light or heat; issuing in beams or rays; beaming with brightness; emitting a vivid light or splendor; as, the radiant sun.
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Mark what radiant state she spreads. Milton.
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3. Beaming with vivacity and happiness; as, a radiant face.
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4. (Her.) Giving off rays; -- said of a bearing; as, the sun radiant; a crown radiant.
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5. (Bot.) Having a raylike appearance, as the large marginal flowers of certain umbelliferous plants; -- said also of the cluster which has such marginal flowers.
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6. (Physics) Emitted or transmitted by radiation; as, a radiant energy; radiant heat.
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Radiant energy (Physics), energy given out or transmitted by radiation, as in the case of light and radiant heat. -- Radiant heat, heat proceeding in right lines, or directly from the heated body, after the manner of light, in distinction from heat conducted or carried by intervening media. -- Radiant point. (Astron.) See Radiant, n., 3.
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Ra"di*ant, n. 1. (Opt.) The luminous point or object from which light emanates; also, a body radiating light brightly.
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2. (Geom.) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.
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3. (Astron.) The point in the heavens at which the apparent paths of shooting stars meet, when traced backward, or whence they appear to radiate.
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