Source : Webster's Revised Unabridged Dictionary (1913)

Effulgent \Ef*ful"gent\, a. [L. effulgens, -entis, p. pr. of
   effulgere.]
   Diffusing a flood of light; shining; luminous; beaming;
   bright; splendid. ``Effulgent rays of light.'' --Cowper.

Source : WordNet®

effulgent
     adj : radiating or as if radiating light; "the beaming sun"; "the
           effulgent daffodils"; "a radiant sunrise"; "a refulgent
           sunset" [syn: {beaming}, {beamy}, {radiant}, {refulgent}]