a device that uses a compressible refrigerant to transfer heat from one body, as the ground, air, or water, to another body, as a building, with the process being reversible.
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- heat of solidification,
- heat of solution,
- heat of sublimation,
- heat of vaporization,
- heat prostration,
- heat rash,
- heat reservoir,
- heat shield,
- heat sink,
- heat stroke
Origin of heat pump
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a device, as used in a refrigerator, for extracting heat from a source and delivering it elsewhere at a much higher temperature
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