gastroesophageal refluxListen to pronunciation(GAS-troh-ee-SAH-fuh-JEE-ul REE-flux)The backward flow of stomach acid contents into the esophagus (the tube that connects the mouth to the stomach). Also called esophageal reflux and gastric reflux.Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#