cardiac sphincter

English Thesaurus

1. the valve between the distal end of the esophagus and the stomach; the physiological sphincter at the esophagogastric junction (noun.body)

hypernym	:	physiological sphincter,
definition	:	a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue (noun.body)

part meronym	:	esophagus, gorge, gullet, oesophagus,
definition	:	the passage between the pharynx and the stomach (noun.body)