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: depend meaninggeneral in a sentencedefinition of differentlyhappen definitionpage meaningannually definitiondefinition of oftenfield meaningspecific in a sentencefence definitiondefinition of insurancefactory meaning 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