Heatsink

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:
1935–40

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
heat sink
 
n
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 10th Edition
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American Heritage
Science Dictionary
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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American Heritage
Cultural Dictionary

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 American Heritage® 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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