heartburn -
a painful burning sensation in the chest caused by gastroesophageal reflux (backflow from the stomach irritating the esophagus); symptomatic of an ulcer or a diaphragmatic hernia or other disorder
heartburn -
A burning pain in the chest that is caused by stomach acid entering the gullet.
Wikipedia
Heartburn, also known as pyrosis or acid indigestion is a burning sensation in the chest, just behind the breastbone or in the epigastrium. The pain often rises in the chest and may radiate to the neck, throat, or angle of the jaw. Heartburn is usually associated with regurgitation of gastric acid (gastric reflux) which is the major symptom of gastroesophageal reflux disease (GERD).
OmegaWiki Dictionary
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heartburn A burning sensation in the chest caused by regurgitation of gastric acid.
