heat dissipation
nounUK /hiːt ˌdɪsɪˈpeɪʃən/
US /hiːt ˌdɪsəˈpeɪʃən/
Heat dissipation is when heat moves away from something and spreads out.
The fan helps with heat dissipation so the computer does not get too hot.
OTHER MEANINGS
2. The process of spreading out extra heat into the surrounding air or material.
Good heat dissipation keeps the engine from overheating.
3. The ability of a device or material to let heat escape.
This metal case has excellent heat dissipation.
4. The release of body heat into the environment.
Sweating helps with heat dissipation during exercise.