From The Collaborative International Dictionary of English v.0.48 :
Effulgence \Ef*ful"gence\, n.
The state of being effulgent; extreme brilliancy; a flood of
light; great luster or brightness; splendor.
[1913 Webster]
The effulgence of his glory abides. --Milton.
[1913 Webster]
The bright and the balmy effulgence of morn. --Beattie.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
effulgence
n 1: the quality of being bright and sending out rays of light
[syn: radiance, radiancy, shine, effulgence,
refulgence, refulgency]