irritable bowel syndrome

noun

: a chronic functional disorder of the colon that is characterized especially by constipation or diarrhea, cramping abdominal pain, and the passage of mucus in the stool
abbreviation IBS

Examples of irritable bowel syndrome in a Sentence

Recent Examples on the Web
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.
Disease-specific foundations such as those for lupus or irritable bowel syndrome can also steer patients to free or low-cost resources or cover some costs of care, Donovan said. Renuka Rayasam, Miami Herald, 3 Feb. 2026 The results of studies vary, but some research found that people with irritable bowel syndrome and types of inflammatory bowel disease can benefit from drinking aloe vera juice. Bestreviews, Mercury News, 29 Jan. 2026 After additional doctors visits, she was misdiagnosed with irritable bowel syndrome (IBS), a prolapse and endometriosis and was advised to perform pelvic floor exercises. Vanessa Etienne, PEOPLE, 27 Jan. 2026 The combination of soluble and insoluble fiber in kiwis can help with constipation and symptoms of irritable bowel syndrome. Cory Martin, Verywell Health, 21 Jan. 2026 See All Example Sentences for irritable bowel syndrome

Word History

First Known Use

1943, in the meaning defined above

Time Traveler
The first known use of irritable bowel syndrome was in 1943

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Cite this Entry

“Irritable bowel syndrome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irritable%20bowel%20syndrome. Accessed 12 Feb. 2026.

Medical Definition

irritable bowel syndrome

noun
: a chronic functional disorder of the colon that is of unknown etiology but is often associated with abnormal intestinal motility and increased sensitivity to visceral pain and that is characterized by diarrhea or constipation or diarrhea alternating with constipation, abdominal pain or discomfort, abdominal bloating, and passage of mucus in the stool
abbreviation IBS

called also irritable colon, irritable colon syndrome, mucous colitis, spastic colon

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