noun
- A premature systole resulting in a momentary cardiac arrhythmia. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). extrasystole. Retrieved September 21, 2026, from http://smartdefine.org/extrasystole/definitions/1219782 |
| Chicago | WordNet. 2010. "extrasystole" http://smartdefine.org/extrasystole/definitions/1219782 (accessed September 21, 2026). |
| Harvard | WordNet 2010, extrasystole, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/extrasystole/definitions/1219782>. |
| MLA | WordNet. "extrasystole" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/extrasystole/definitions/1219782> |