noun
- 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. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). ion engine. Retrieved September 21, 2026, from http://smartdefine.org/ion_engine/definitions/1205116 |
| Chicago | WordNet. 2010. "ion engine" http://smartdefine.org/ion_engine/definitions/1205116 (accessed September 21, 2026). |
| Harvard | WordNet 2010, ion engine, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/ion_engine/definitions/1205116>. |
| MLA | WordNet. "ion engine" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/ion_engine/definitions/1205116> |