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
The acidic nature of coffee can be a source of discomfort for people with acid reflux, also known as gastroesophageal reflux disease (GERD).
—Christina Manian, Health, 10 June 2026
Most research on the health effects of late-night eating center on sleep, diabetes, obesity, and acid reflux or GERD (gastroesophageal reflux disease).
—Kristen Rogers, CNN Money, 8 June 2026
Drinking kombucha every day can cause digestive discomfort for some people, especially those with IBS or acid reflux.
—Kirsten Nunez, Martha Stewart, 3 June 2026
Playford coauthored a few papers showing benefit from the supplement, including a small pilot study reporting that colostrum reduces some of the GI side effects of GLP-1 drugs like Ozempic, such as acid reflux and bloating.
—Ari Daniel, NPR, 1 June 2026
See All Example Sentences for acid reflux
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Christina Manian, Health, 10 June 2026
Most research on the health effects of late-night eating center on sleep, diabetes, obesity, and acid reflux or GERD (gastroesophageal reflux disease).
—Kristen Rogers, CNN Money, 8 June 2026
Drinking kombucha every day can cause digestive discomfort for some people, especially those with IBS or acid reflux.
—Kirsten Nunez, Martha Stewart, 3 June 2026
Playford coauthored a few papers showing benefit from the supplement, including a small pilot study reporting that colostrum reduces some of the GI side effects of GLP-1 drugs like Ozempic, such as acid reflux and bloating.
—Ari Daniel, NPR, 1 June 2026
See All Example Sentences for acid reflux
Cite this Entry
“Acid reflux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acid%20reflux. Accessed 16 Jun. 2026.
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?
Merriam-Webster unabridged
