The emission of visible light by a body, caused by its high temperature. The incandescence of the molten lava was visible from miles away.
The quality or state of being incandescent, or glowing with heat. The incandescence of the light bulb dimmed as it began to cool down.
Intense passion or brilliance in thought, expression, or feeling (figurative). The incandescence of her prose captivated critics and readers alike.