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单词 radiant
释义

WordReference Random House Learner's Dictionary of American English © 2024
ra•di•ant /ˈreɪdiənt/USA pronunciation   adj. 
  1. [before a noun] giving off rays of light;
    shining;
    bright.
  2. bright with joy, hope, etc.:a radiant smile.
  3. Physicsgiven off or sent out by radiation:[before a noun]radiant energy; radiant heat.
ra•di•ant•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2024
ra•di•ant  (rādē ənt),USA pronunciation adj. 
  1. emitting rays of light;
    shining;
    bright:the radiant sun; radiant colors.
  2. bright with joy, hope, etc.:radiant smiles; a radiant future.
  3. Physicsemitted or propagated by radiation.
  4. Heraldry
    • noting a partition line having a series of flamelike indentations formed by ogees joined in zigzags;
      rayonny.
    • (of a charge, as an ordinary) having an edge or edges so formed.

n. 
  1. a point or object from which rays proceed.
  2. Astronomythe point in the heavens from which a shower of meteors appears to radiate.
  3. Energya refractory absorbing and radiating heat from the flames of a gas fireplace or the like.
  • Latin radiant- (stem of radiāns, present participle of radiāre to radiate light, shine), equivalent. to radi(us) beam, ray (see radius) + -ant- -ant
  • late Middle English 1400–50
radi•ant•ly, adv. 
    • 1.See corresponding entry in Unabridged beaming, refulgent, resplendent. See bright. 
    • 1.See corresponding entry in Unabridged dim.

Collins Concise English Dictionary © HarperCollins Publishers::
radiant /ˈreɪdɪənt/ adj
  1. sending out rays of light; bright; shining
  2. characterized by health, intense joy, happiness, etc
  3. emitted or propagated by or as radiation; radiated: radiant heat
  4. sending out heat by radiation: a radiant heater
  5. (of a physical quantity in photometry) evaluated by absolute energy measurements: radiant flux, radiant efficiency
n
  1. a point or object that emits radiation, esp the part of a heater that gives out heat
  2. the point in space from which a meteor shower appears to emanate
Etymology: 15th Century: from Latin radiāre to shine, from radius ray of light, radius

ˈradiantly adv
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