pyrosis Meaning, Definition & Usage

  1. 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
    heartburn.

WordNet

Py*ro"sis noun
Etymology
NL., fr Gr. a burning, an inflammation, fr. to burn, fr. fire.
Definitions
  1. (Med.) See Water brash, under Brash.

Webster 1913