The process of propelling or accelerating ions; specifically a mode of rocket propulsion in which thrust is generated by the ejection of ions produced inside the engine and accelerated by an electric field.
Origin
1920s.
Definition of ion propulsion in US English:
ion propulsion
noun
Chemistry Physics
The process of propelling or accelerating ions; specifically a mode of rocket propulsion in which thrust is generated by the ejection of ions produced inside the engine and accelerated by an electric field.