gas·​tro·​in·​tes·​ti·​nal | \ ˌga-strō-in-ˈte-stə-nᵊl, -ˈtes(t)-nəl\

Definition of gastrointestinal

: of, relating to, affecting, or including both stomach and intestine

Examples of gastrointestinal in a Sentence

Recent Examples on the Web

Older adults and people with other gastrointestinal problems can also be susceptible to vitamin B12 deficiencies. Cheryl Wischhover, Vox, "These new vape companies want you to inhale ... vitamins," 24 Oct. 2018 Hillard explained that there are some side effects of using it, including interference with some medicines and some gastrointestinal intestine problems. Karen Pilarski, Milwaukee Journal Sentinel, "Six things you might be asking about hemp," 13 July 2018 These antibodies travel to cells and cause an allergic reaction, like something on the skin (hives, itchiness, swelling), gastrointestinal symptoms (vomiting and diarrhea), and even anaphylaxis. SELF, "I'm a Registered Dietitian and Here’s What I Want People to Know About 'Food Sensitivity' Testing Kits," 12 Oct. 2018 Side effects, most commonly gastrointestinal symptoms, were similar in the treatment and placebo groups. Nicholas Bakalar, New York Times, "Probiotics May Be Good for Your Bones," 3 July 2018 Individuals who have gastrointestinal symptoms and are thinking of modifying their diets should first consult a medical professional before making any health behavior changes. Miguel Saps, M.d., miamiherald, "Is eating gluten really bad for you?," 19 June 2018 The infaction can cause fever, muscle, body and head aches, and convulsions sometimes preceded by diarrhea or other gastrointestinal symptoms. Heather Leighton, Houston Chronicle, "USDA issues a recall on thousands of pounds of premade meatballs sold in Texas due to listeria risk," 25 Jan. 2018 Paratyphi C causes a typhoid-like illness with fever, gastrointestinal symptoms, and rash, similar to the historical symptoms of the cocoliztli. Beth Mole, Ars Technica, "Gut bacteria linked to cataclysmic epidemic that wiped out 16th-century Mexico," 16 Jan. 2018 Vibrio bacteria usually cause gastrointestinal symptoms like diarrhea, vomiting, and abdominal pain. Sarah Klein,, "A Woman Died From 'Flesh-Eating' Bacteria After Eating Raw Oysters. Here's What You Need to Know," 9 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gastrointestinal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gastrointestinal

1831, in the meaning defined above

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Last Updated

10 Jan 2019

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The first known use of gastrointestinal was in 1831

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English Language Learners Definition of gastrointestinal

medical : of or relating to both the stomach and the intestines


gas·​tro·​in·​tes·​ti·​nal | \ ˌgas-trō-in-ˈtes-tən-ᵊl, -ˈtes(t)-nəl \

Medical Definition of gastrointestinal

: of, relating to, or affecting both stomach and intestine gastrointestinal distress

More from Merriam-Webster on gastrointestinal

Britannica English: Translation of gastrointestinal for Arabic Speakers

Comments on gastrointestinal

What made you want to look up gastrointestinal? Please tell us where you read or heard it (including the quote, if possible).


to gather or build up little by little

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