noun
- A leading instance in its field.
- usage: "the new policy will be a pacesetter in community relations"
- synonyms: pacesetter
- A specialized bit of heart tissue that controls the heartbeat.
- synonyms: cardiac pacemaker, sinoatrial node, SA node
- An implanted electronic device that takes over the function of the natural cardiac pacemaker.
- synonyms: artificial pacemaker
- A horse used to set the pace in racing.
- synonyms: pacer, pacesetter
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). pacemaker. Retrieved September 22, 2026, from http://smartdefine.org/pacemaker/definitions/1206461 |
| Chicago | WordNet. 2010. "pacemaker" http://smartdefine.org/pacemaker/definitions/1206461 (accessed September 22, 2026). |
| Harvard | WordNet 2010, pacemaker, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/pacemaker/definitions/1206461>. |
| MLA | WordNet. "pacemaker" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/pacemaker/definitions/1206461> |