The Collaborative International Dictionary of English v.0.48:

Resplendent \Re*splen"dent\ (-dent), a. [L. resplendens, -entis,
   p. pr. of resplendere to shine brightly; pref. re- re- +
   splendere to shine. See Splendid.]
   Shining with brilliant luster; very bright. --
   Re*splen"dent*ly, adv.
   [1913 Webster]

         With royal arras and resplendent gold.   --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

resplendent
    adj 1: having great beauty and splendor; "a glorious spring
           morning"; "a glorious sunset"; "splendid costumes"; "a
           kind of splendiferous native simplicity" [syn:
           glorious, resplendent, splendid, splendiferous]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "resplendent":
   beaming, bedazzling, blazing, blinding, blooming, bright,
   bright and shining, brilliant, charismatic, dazzling, devastating,
   divine, effulgent, flamboyant, flaming, fulgent, fulgid, garish,
   glamorous, glaring, glary, glorious, glowing, gorgeous, heavenly,
   illustrious, killing, lustrous, magic, magnificent, numinous,
   proud, radiant, raving, ravishing, refulgent, shining, sparkling,
   splendent, splendid, splendiferous, splendorous, splendrous,
   stunning, sublime, superb, vivid



The Devil's Dictionary (1881-1906):

RESPLENDENT, adj.  Like a simple American citizen beduking himself in
his lodge, or affirming his consequence in the Scheme of Things as an
elemental unit of a parade.

        The Knights of Dominion were so resplendent in their velvet-
    and-gold that their masters would hardly have known them.
                                           "Chronicles of the Classes"