单词 | radiant |
释义 | Word Frequency radiant(ˈreɪdɪənt) adjective 1. sending out rays of light; bright; shining 2. characterized by health, intense joy, happiness, etc a radiant countenance 3. emitted or propagated by or as radiation; radiated radiant heat 4. sending out heat by radiation a radiant heater 5. physics (of a physical quantity in photometry) evaluated by absolute energy measurements radiant flux radiant efficiency Compare luminous noun 6. a point or object that emits radiation, esp the part of a heater that gives out heat 7. astronomy the point in space from which a meteor shower appears to emanate Derived forms radiantly (ˈradiantly) adverb Word origin C15: from Latin radiāre to shine, from radius ray of light, radius |
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