Definition of sphincter Sphincter
sphinc•ter
We found 8 definitions of sphincter from 6 different sources.
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What does sphincter mean?
WordNet
NounPlural: sphincters |
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| sphincter - a ring of muscle that contracts to close an opening | ||
| anatomical sphincter, sphincter muscle | ||
| musculus, muscle authority or power or force (especially when used in a coercive way); "the senators used their muscle to get the party leader to resign" | ||
| physiological sphincter a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue | ||
| anal sphincter, musculus sphincter ani, sphincter ani the sphincter muscle of the anus | ||
| musculus sphincter urethrae, urethral sphincter a striated sphincter muscle that constricts the urethra | ||
| bladder sphincter, musculus sphincter vesicae the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening | ||
| musculus sphincter ductus choledochi the smooth muscle sphincter of the common bile duct | ||
| musculus sphincter ductus pancreatici the smooth muscle sphincter of the main pancreatic duct | ||
| musculus sphincter pupillae, pupillary sphincter a ring of smooth muscle surrounding the iris | ||
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Wiktionary 
Webster DictionaryWebster's Unabridged Dictionary 📘
- sphincter (n.)
A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder. - sphincter (a.)
Of, pertaining to, or designating, a sphincter; as, a sphincter muscle.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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sphincter
A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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sphincter
sfingk′tėr, n. (anat.) a muscle that contracts or shuts an orifice or opening which it surrounds—around the anus, &c.—adjs. Sphinc′terāte, provided with a sphincter, contracted as if by a sphincter; Sphinctē′rial, Sphincter′ic, relating to a sphincter or its function.—n. Sphincterot′omy, the operation of cutting a sphincter. [Gr. sphingktēr,—sphinggein, to bind tight.]
Part of speech
🔤- sphincter, noun, singular of sphincters.
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