acid reflux
noun
: backward flow of the acidic contents of the stomach into the esophagus that is due to malfunctioning of a sphincter at the lower end of the esophagus and that results especially in heartburn : gastroesophageal reflux
a medication for acid reflux
Acid reflux is the backflow of stomach contents into the esophagus. The feeling of acid reflux is heartburn: a mild burning sensation in the mid-chest …—
The Tennessee Tribune
The Tennessee TribuneAcid reflux occurs when the valve between your esophagus and stomach doesn't close properly, allowing stomach acid to wash back up through your esophagus …—Miriam Jones Bradley
Miriam Jones BradleyExamples of acid reflux in a Sentence
Recent Examples on the Web
Some infants with acid reflux, for example, might prefer to sleep on their sides.
—Sherri Gordon, Parents, 30 Jan. 2025
Symptoms can mimic acid reflux, leading some people to put off seeking medical attention until an emergency arises.
—Jonathan Granoff, Newsweek, 29 Jan. 2025
Taking it with a meal can help the fish oil mix with food and pass from the stomach to the intestines more efficiently, rather than floating on top of stomach fluid, which can lead to acid reflux (liquid contents from the stomach flow back through the esophagus).
—Karen Berger, Pharmd, Verywell Health, 6 Jan. 2025
Baking soda also is used in dental health and sometimes to calm an upset stomach or reduce acid reflux.
—Sherri Gordon, Health, 14 Oct. 2024
See all Example Sentences for acid reflux 
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Sherri Gordon, Parents, 30 Jan. 2025
Symptoms can mimic acid reflux, leading some people to put off seeking medical attention until an emergency arises.
—Jonathan Granoff, Newsweek, 29 Jan. 2025
Taking it with a meal can help the fish oil mix with food and pass from the stomach to the intestines more efficiently, rather than floating on top of stomach fluid, which can lead to acid reflux (liquid contents from the stomach flow back through the esophagus).
—Karen Berger, Pharmd, Verywell Health, 6 Jan. 2025
Baking soda also is used in dental health and sometimes to calm an upset stomach or reduce acid reflux.
—Sherri Gordon, Health, 14 Oct. 2024
See all Example Sentences for acid reflux
Dictionary Entries Near acid reflux
Cite this Entry
“Acid reflux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acid%20reflux. Accessed 11 Feb. 2025.
Copy CitationMedical Definition
acid reflux
noun
: backward flow of the acidic contents of the stomach into the esophagus that is due to malfunctioning of a sphincter at the lower end of the esophagus and that results especially in heartburn : gastroesophageal reflux
… people who report experiencing at least weekly symptoms of acid reflux have substantially higher risks of BE [=Barrett's esophagus] than those with less frequent episodes. Moreover, we found that symptoms of acid reflux experienced at older ages conferred substantially higher risks of BE than symptoms at younger ages …—Kylie J. Smith et al., Cancer Epidemiology, Biomarkers & Prevention
Kylie J. Smith et al., Cancer Epidemiology, Biomarkers & PreventionLove words? Need even more definitions?
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