- a mechanical device designed to transform part of the heat entering it into work.
Origin of heat engine
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for heat engine
But during the centuries of experiments with a heat-engine, the political world had greatly changed.The Story of Mankind
Hendrik Van Loon
But during the centuries of experiments with a "heat-engine," the political world had greatly changed.The Story of Mankind
Hendrik van Loon
In every heat-engine, therefore, there must be a fall from a higher to a lower temperature; otherwise no work would be done.
- an engine that converts heat energy into mechanical energy
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