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
Webster's English Dictionary