World English Dictionary
acid reflux
the regurgitation of stomach acid into the oesophagus, causing heartburn

Collins English Dictionary - Complete & Unabridged 10th Edition
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Main Entry:  acid reflux
Part of Speech:  n
Definition:  a burning sensation in the stomach, typically extending toward the esophagus and sometimes associated with the eructation of an acid fluid; also called heartburn, pyrosis, cardialgia, gastroesophageal reflux
Etymology:  1980-85's 21st Century Lexicon
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American Heritage
Science Dictionary
acid reflux  
See heartburn.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
New government figures show a worrisome increase in esophagus disorders from
  severe acid reflux.
Asthma patients using powerful acid reflux drugs even though they don't have
  heartburn should stop taking them, lung experts say.
Stomach acid has long been blamed for acid reflux, heartburn and other ills.
In fact, there is a theory that in patients with coronary artery disease, acid
  reflux may actually trigger angina.
Copyright © 2014, LLC. All rights reserved.
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