Dictionary
hia'tus her'nia
Pathol.
an abnormal condition in which part of the stomach protrudes upward through the esophageal cleft in the diaphragm, sometimes causing a backflow of acid stomach contents into the esophagus.
Also,hia'tal her'nia.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.