noun
- A ring of smooth muscle surrounding the iris.
- synonyms: musculus sphincter pupillae
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). pupillary sphincter. Retrieved September 22, 2026, from http://smartdefine.org/pupillary_sphincter/definitions/1213496 |
| Chicago | WordNet. 2010. "pupillary sphincter" http://smartdefine.org/pupillary_sphincter/definitions/1213496 (accessed September 22, 2026). |
| Harvard | WordNet 2010, pupillary sphincter, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/pupillary_sphincter/definitions/1213496>. |
| MLA | WordNet. "pupillary sphincter" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/pupillary_sphincter/definitions/1213496> |