physiological sphincter 1
noundomain: body part
Princeton WordNet [ver.3.1]
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EnglishDefinition
a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue
Hypernym
sphincter 1
noun
a ring of muscle that contracts to close an opening
EnglishHyponym
the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction
