noun
- A specialized bit of heart tissue that controls the heartbeat.
- synonyms: pacemaker, cardiac pacemaker, SA node
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). sinoatrial node. Retrieved September 20, 2026, from http://smartdefine.org/sinoatrial_node/definitions/1330063 |
| Chicago | WordNet. 2010. "sinoatrial node" http://smartdefine.org/sinoatrial_node/definitions/1330063 (accessed September 20, 2026). |
| Harvard | WordNet 2010, sinoatrial node, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/sinoatrial_node/definitions/1330063>. |
| MLA | WordNet. "sinoatrial node" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/sinoatrial_node/definitions/1330063> |