heat engine

English Thesaurus

1. any engine that makes use of heat to do work (noun.artifact)

hypernym	:	engine,
definition	:	motor that converts thermal energy to mechanical work (noun.artifact)

hyponym	:	external-combustion engine,
definition	:	a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energy (noun.artifact)

hyponym	:	ice, internal-combustion engine,
definition	:	a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine (noun.artifact)