sphincter 1
noundomain: body part
Princeton WordNet [ver.3.1]
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EnglishDefinition
a ring of muscle that contracts to close an opening
Hypernym
muscle 1
noun
one of the contractile organs of the body
EnglishHyponym
a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue
anal sphincter 1
noun
the sphincter muscle of the anus
a striated sphincter muscle that constricts the urethra
the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening
the smooth muscle sphincter of the common bile duct
