ful·gent 
(fljənt, fŭl-)
(fljənt, fŭl-)adj.
Shining brilliantly; radiant: "tower searchlights ... as fulgent as half a billion candles" (Nicholas Proffitt).
[Middle English, from Latin fulgēns, fulgent-, present participle of fulgēre, to flash, shine; see bhel-1 in the Appendix of Indo-European roots.]
fulgent·ly adv.