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
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Kassim, who treats patients with irritable bowel syndrome, often recommends methylcellulose as a supplement over the popular psyllium husk because people will be more likely to stick with it. Akshay Syal, NBC news, 31 May 2025 Influencers discuss their irritable bowel syndrome openly on TikTok. Priya Krishna, New York Times, 16 May 2025 Lassi may help with digestion, symptoms of irritable bowel syndrome (IBS), and may be easier to tolerate for people with lactose intolerance.1516 Some research also links it to improved heart health, blood sugar management, and immune system function.1716 8. Jonathan Purtell, Verywell Health, 23 May 2025 Studies have shown that people with irritable bowel syndrome (IBS) fare better with walking because high-intensity exercise can make symptoms worse. Sherri Gordon, Health, 15 Apr. 2025 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 10 Jun. 2025.

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

More from Merriam-Webster on irritable bowel syndrome

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