Webster's English Dictionary

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radiant

Cross references:
  1. bright                
 
1. ra.di.ant \'ra-d-e--*nt\ aj 1a: radiating rays or reflecting beams of 
   light  1b: vividly bright and shining : GLOWING  2: marked by or expressive 
   of love, confidence, or happiness  3a: emitted or transmitted by radiation  
   3b: emitting or relating to radiant heat  4: of, relating to, or exhibiting 
   biological radiation  - ra.di.ant.ly av
2. radiant n : something that radiates : as  : a point in the heavens at 
   which the visible parallel paths of meteors a ppear to meet when traced 
   backward : a point or object from which light emanates  : the part of a gas 
   or electric heater that becomes incandescent