When heated, coals become incandescent, which means that they glow red-hot. You could also describe a brilliant and moving novel as incandescent.

Incandescent, like the word candle, has its origins in the Latin word candere meaning "to glow or shine." Combined with the suffix in meaning "within," its meaning can be easily pulled from the combination of its root words: "to glow or shine from within." Fire crackers are incandescent because they give off brilliant lights when heated, but look up at a blazing fireworks display, and you'll find it's quite moving, or incandescent with intensity and brilliance.

Definitions of incandescent

adj emitting light as a result of being heated

“an incandescent bulb”
characterized by or emitting light

adj characterized by ardent emotion or intensity or brilliance

“an incandescent performance”
having or deserving or conferring glory

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