Source : Webster's Revised Unabridged Dictionary (1913)

Incandescent \In`can*des"cent\, a. [L. incandecens, -entis, p.
   pr. of incandescere to become warm or hot; pref. in- in +
   candescere to become of a glittering whiteness, to become red
   hot, incho. fr. candere to be of a glittering whiteness: cf.
   F. incandescent. See {Candle}.]
   White, glowing, or luminous, with intense heat; as,
   incandescent carbon or platinum; hence, clear; shining;
   brilliant.

         Holy Scripture become resplendent; or, as one might
         say, incandescent throughout.            --I. Taylor.

   {Incandescent lamp} or {light} (Elec.), a kind of lamp in
      which the light is produced by a thin filament of
      conducting material, usually carbon

Source : WordNet®

incandescent
     adj 1: emitting light as a result of being heated; "an incandescent
            bulb" [syn: {candent}]
     2: characterized by ardent emotion or intensity or brilliance;
        "an incandescent performance"