adjective
incandescent
in-kun-DES-unt/ˌɪnkənˈdesnt/
Glowing visibly from intense heat.
The incandescent filament inside the clear bulb glows yellow-white.

Etymology
The root describes beginning to glow or becoming white. With “within,” it formed a verb for becoming warm or glowing, giving the adjective its image of something made luminous by heat.
In context
the thin metal wire in an incandescent bulb gets so hot when an electric current flows through it that it heats up and begins to Glow
More examples
- Incandescent lava lights the hillside as it flows downhill.
- The blacksmith pulls an incandescent iron bar from the forge.
- An incandescent light bulb produces light by heating a filament.
Forms
incandescent
incandescence noun — The emission of visible light from intense heat.
Similar words
- glowing
- Describes steady light without necessarily implying intense heat.
- red-hot
- Specifically describes heat intense enough to produce a red glow.