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]

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"