radiant >> /ˈreɪdiənt/
Definition: [noun] A point or object from which light or heat radiates, especially a heating element in an electric or gas heater.
Definition: [adjective] Sending out light; shining or glowing brightly.
Example: a bird with radiant green and red plumage
Definition: [adjective] (of heat) transmitted by radiation, rather than conduction or convection.
Example: plants convert the radiant energy of the sun into chemical energy