Definition of heartburn
English to English noun - 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
source: WordNet 3.0 - An uneasy, burning sensation in the stomach, often attended with an inclination to vomit. It is sometimes idiopathic, but is often a symptom of other complaints.
source: Webster 1913
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