noun \-ˌbərn\

Definition of HEARTBURN

: a burning discomfort behind the lower part of the sternum usually related to spasm of the lower end of the esophagus or of the upper part of the stomach often in association with gastroesophageal reflux—called also cardialgia, pyrosis; compare water brash

Seen & Heard

What made you want to look up heartburn? Please tell us where you read or heard it (including the quote, if possible).