Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ion_engine

1 sense of ion engine

Sense 1
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)
       => reaction-propulsion engine, reaction engine -- (a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream)