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heat sink

noun
1.
Thermodynamics. any environment or medium that absorbs heat.
2.
Also, heatsink. 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.
Origin of heat sink
1935-1940
First recorded in 1935-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for heat sink
Historical Examples
  • As a heat sink, the water provided stability of temperature that would have been difficult to achieve without it.

    Where I Wasn't Going Walt Richmond
British Dictionary definitions for heat sink

heat sink

noun
1.
a metal plate specially designed to conduct and radiate heat from an electrical component
2.
a layer of material placed within the outer skin of high-speed aircraft to absorb heat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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heat sink in Science
heat sink  
  1. A protective device that absorbs and dissipates the excess heat generated by a system.

  2. 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.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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heat sink in Culture

heat sink definition


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

Note: 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.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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