The Collaborative International Dictionary of English v.0.48:

Candescent \Can*des"cent\, a. [L. candescens, -entis, p. pr. of
   candescere, v. incho. fr. candere to shine.]
   Glowing; luminous; incandescent.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

candescent
    adj 1: glowing from great heat

Moby Thesaurus II by Grady Ward, 1.0:

72 Moby Thesaurus words for "candescent":
   ablaze, afire, aflame, aflicker, aglow, alight, ardent, beaming,
   beamy, blazing, blushing, bright and sunny, burning, candent,
   comburent, conflagrant, flagrant, flaming, flaring, flickering,
   flushing, fuming, gleaming, gleamy, glinting, glowing, guttering,
   ignescent, ignited, illuminant, in a blaze, in a glow, in flames,
   incandescent, inflamed, irradiative, kindled, lamping,
   light as day, live, living, luciferous, lucific, luciform,
   luminant, luminative, luminiferous, luminificent, luminous,
   lustrous, on fire, orient, radiant, reeking, rutilant, rutilous,
   scintillant, scintillating, shining, shiny, smoking, smoldering,
   sparking, starbright, starlike, starry, streaming, suffused, sunny,
   sunshiny, unextinguished, unquenched