radiant /ˈreɪdijənt/ adjective Learner's definition of RADIANT
1
[more radiant; most radiant] : having or showing an attractive quality of happiness, love, health, etc.喜气洋洋的；容光焕发的 2
[more radiant; most radiant] : bright and shining灿烂的；光芒四射的 3
always used before a noun,
technical : sent out from something in rays or waves that you cannot see辐射的 -
radiant heat辐射热
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radiant energy辐射能