Finding
acid reflux
ac·id re·flux
Definitions related to acid reflux:
  • (gastroesophageal reflux) A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • (gastroesophageal reflux) The backward flow of stomach acid contents into the esophagus (the tube that connects the mouth to the stomach).
    NCI
    U.S. National Cancer Institute, 2021
  • (gastrointestinal regurgitation) Flow in the opposite direction from normal, as the casting up of undigested food or gas from the stomach, or the backward flowing of blood into the heart, or between the chambers of the heart when a valve is incompetent.
    U.S. FDA Glossary
    U.S. Food & Drug Administration, 2021
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