heartburn What is the Definition of heartburn?Noun:a painful burning sensation in the chest caused by gastroesophageal reflux (backflow from the stomach irritating the esophagus) Other meanings of heartburn (synonyms, cognates). ENRU heartburn изжога Frequently viewed: messy meaninglow meaningsatisfied definitionplease definitiondefinition of typicalworth meaningreceive definitiongrouping meaningregard meaningremain in a sentenceencounter in a sentencedefinition of develop A B C D E F G H I J K L M N O P Q R S T U V W X Y Z