ion engine
Noun
Meaning
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
Source: WordNetHypernyms
Examples
In deep space Deep Space 1 NASA developed the NSTAR ion engine for use in interplanetary science missions beginning in the late-1990s.
In 1996, the program's study team recommended a mission to explore the asteroid belt using a spacecraft with an ion engine as a high priority.
In an ion engine, electric power is used to create charged particles of the fuel, usually the gas xenon, and accelerate them to extremely high velocities.
It was designed to use nuclear fission for power, ion engine propulsion, and would have studied Ganymede in greater detail than previously.