The Collaborative International Dictionary of English v.0.48:

Incandescence \In`can*des"cence\, n. [Cf. F. incandescence.]
   A white heat, or the glowing or luminous whiteness of a body
   caused by intense heat.
   [1913 Webster]

WordNet (r) 3.0 (2006):

incandescence
    n 1: the phenomenon of light emission by a body as its
         temperature is raised [syn: incandescence, glow]
    2: light from heat

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "incandescence":
   afterglow, air glow, bloom, blush, candescence, fieriness, flush,
   gleam, glint, gloss, glow, hectic, hectic flush, luster, redness,
   rosiness, sheen, shine, shininess, shining light, skylight,
   sunset glow, whiteness