heat sink

noun

Thermodynamics. any environment or medium that absorbs heat.
Also heatsink. Electronics. a metallic heat exchanger designed to absorb and dissipate excess heat from one of the devices, as a transistor or resistor, in a circuit.

heat sink

noun

a metal plate specially designed to conduct and radiate heat from an electrical component
a layer of material placed within the outer skin of high-speed aircraft to absorb heat

heat sink

A protective device that absorbs and dissipates the excess heat generated by a system.
An environment capable of absorbing heat from substances within it (and with which it is in thermal contact) without an appreciable change in its own temperature and without a change in its own phase.

heat sink

A reservoir for excess heat, especially in a mechanical or electrical device.

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Notes

One obstacle to the loading of circuits onto microprocessors is the heat generated by electrical circuits . Effective heat sinks, such as metal fins on top of a microprocessor, can provide part of the solution to this problem.

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Word History and Origins

Origin of heat sink¹

First recorded in 1935–40

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Example Sentences

As a heat sink, the water provided stability of temperature that would have been difficult to achieve without it.

From Project Gutenberg

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