Definition of hiatal hernia
: protrusion of part of the stomach upward into the chest cavity through the passage in the diaphragm for the esophagus usually with movement of the opening of the esophagus into the stomach to a position above the diaphragm
— called also hiatus hernia
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Merriam-Webster unabridged
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Time Traveler for hiatal hernia
The first known use of hiatal hernia was circa 1944
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