noun
- An internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke; work is done on the third stroke and the products of combustion are exhausted on the fourth stroke.
- synonyms: four-stroke internal-combustion engine
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). four-stroke engine. Retrieved September 20, 2026, from http://smartdefine.org/four-stroke_engine/definitions/1204227 |
| Chicago | WordNet. 2010. "four-stroke engine" http://smartdefine.org/four-stroke_engine/definitions/1204227 (accessed September 20, 2026). |
| Harvard | WordNet 2010, four-stroke engine, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/four-stroke_engine/definitions/1204227>. |
| MLA | WordNet. "four-stroke engine" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/four-stroke_engine/definitions/1204227> |