Excandescence :: Excandescence (n.) A growing hot; a white or glowing heat; incandescence.
Incandescence :: Incandescence (n.) A white heat, or the glowing or luminous whiteness of a body caused by intense heat..
Incandescent :: Incandescent (a.) White, glowing, or luminous, with intense heat; as, incandescent carbon or platinum; hence, clear; shining; brilliant..