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Definition of Sphincter
1. Noun. A ring of muscle that contracts to close an opening.
Exact synonyms: Anatomical Sphincter, Sphincter Muscle
Generic synonyms: Muscle, Musculus
Specialized synonyms: Physiological Sphincter, Anal Sphincter, Musculus Sphincter Ani, Sphincter Ani, Musculus Sphincter Urethrae, Urethral Sphincter, Bladder Sphincter, Musculus Sphincter Vesicae, Musculus Sphincter Ductus Choledochi, Musculus Sphincter Ductus Pancreatici, Musculus Sphincter Pupillae, Pupillary Sphincter, Musculus Sphincter Pylori, Pyloric Sphincter, Pyloric Valve
Generic synonyms: Muscle, Musculus
Specialized synonyms: Physiological Sphincter, Anal Sphincter, Musculus Sphincter Ani, Sphincter Ani, Musculus Sphincter Urethrae, Urethral Sphincter, Bladder Sphincter, Musculus Sphincter Vesicae, Musculus Sphincter Ductus Choledochi, Musculus Sphincter Ductus Pancreatici, Musculus Sphincter Pupillae, Pupillary Sphincter, Musculus Sphincter Pylori, Pyloric Sphincter, Pyloric Valve
Definition of Sphincter
1. n. A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.
2. a. Of, pertaining to, or designating, a sphincter; as, a sphincter muscle.
Definition of Sphincter
1. Noun. (anatomy) A ringlike band of muscle that surrounds a bodily opening, constricting and relaxing as required for normal physiological functioning. ¹
¹ Source: wiktionary.com
Definition of Sphincter
1. [n -S]
Medical Definition of Sphincter
1.