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|Noun||1.||reaction-propulsion engine - a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream|
engine - motor that converts thermal energy to mechanical work
ion engine - a type of reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity by an electric field
jet engine - a gas turbine produces a stream of hot gas that propels a jet plane by reaction propulsion
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