词典释义：
sending out light; shining or glowing brightly
发光的；明亮的，光辉灿烂的
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a bird with radiant green and red plumage .绿红相间羽毛鲜亮的鸟。
(of a person or their expression)clearly emanating great joy, love, or health
（人，表情）喜气洋洋的；洋溢着爱的；光华照人的
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she gave him a radiant smile .她对他粲然一笑。
(of an emotion or quality)emanating powerfully from someone or something: very intense or conspicuous
（情感，品质）强烈的；显眼的，显著的，出色的
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he praised her radiant self-confidence .她充满自信，对此他给予了赞扬。
[attrib.](of electromagnetic energy, especially heat)transmitted by radiation, rather than conduction or convection
（电磁能，尤指热能）辐射传输的。
(of an appliance)designed to emit such energy, especially for cooking or heating
（器具）（尤指为烹饪或加热而）发出辐射热的。
a point or object from which light or heat radiates, especially a heating element in an electric or gas heater
辐射源（尤指电热器或气热器的产热部分）。
【天文】 辐射点。
"late Middle English： from Latin
