heat sink

a part of a system designed to be at a lower temperature than its surroundings and used to dissipate heat from that system

See heat sink in American Heritage Dictionary 4

noun
  1. An environment capable of absorbing heat from an object with which it is in thermal contact without a phase change or an appreciable change in temperature.
  2. A protective device that absorbs and dissipates the excess heat generated by a system.

Learn more about heat sink

heat sink

link/cite print suggestion box