incandescence

Incandescence, n.

Etymology: [Cf. F. incandescence.]

A white heat, or the glowing or luminous whiteness of a body caused by intense heat.

Shades of meaning

Fernald has no entry of its own for incandescence; he lists it under light.

Where he writes about it:

The light of incandescence is intense and white like that from metal at a white heat. — from light