Source : Webster's Revised Unabridged Dictionary (1913)

Refulgence \Re*ful"gence\ (r?*f?l"jens), Refulgency
\Re*ful"gen*cy\ (-jen*s?), n. [L. refulgentia. See {Refulgent}.]
   The quality of being refulgent; brilliancy; splender;
   radiance.

Source : WordNet®

refulgency
     n : the quality of being bright and sending out rays of light
         [syn: {radiance}, {radiancy}, {shine}, {effulgence}, {refulgence}]