What is the meaning of sphincter?

A ring of muscle that contracts to close an opening.
- synonyms: anatomical sphincter, sphincter muscle

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APA	WordNet. (2010). sphincter. Retrieved September 21, 2026, from http://smartdefine.org/sphincter/definitions/1213485
Chicago	WordNet. 2010. "sphincter" http://smartdefine.org/sphincter/definitions/1213485 (accessed September 21, 2026).
Harvard	WordNet 2010, sphincter, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/sphincter/definitions/1213485>.
MLA	WordNet. "sphincter" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/sphincter/definitions/1213485>

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