diarrhea

American  

[dahy-uh-ree-uh] / ˌdaɪ əˈri ə /

Or diarrhoea

noun

Pathology.

• diarrheas
  plural

1. an intestinal disorder characterized by abnormal frequency and fluidity of fecal evacuations.

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diarrhea Scientific  

/ dī′ə-rē′ə /

1. Excessive and frequent evacuation of watery feces, usually a symptom of a gastrointestinal disorder. Severe, prolonged diarrhea can lead to dehydration.

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diarrhea Cultural  

1. The frequent passage of abnormally watery feces, which is a sign of illness.

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Other Word Forms

Derived Forms

• antidiarrheal
  adjective
• diarrheal
  adjective
• diarrheic
  adjective
• diarrhetic
  adjective
• diarrhoeal
  adjective
• diarrhoeic
  adjective
• diarrhoetic
  adjective

Inflected Forms

Nouns

• diarrheas
  plural

Etymology

Origin of diarrhea

1350–1400; Middle English diaria < Late Latin diarrhoea < Greek diárrhoia a flowing through, equivalent to diarrho- (variant stem of diarrheîn to flow through) + -ia -ia

Compare meaning

How does diarrhea compare to similar and commonly confused words? Explore the most common comparisons:

• dysentery vs. diarrhea

Explanation

Diarrhea is runny, watery feces that is often painful, too. People get it from the flu, spicy food, food poisoning, and a host of other nasty reasons. No one likes diarrhea, but it happens to us all. Not only is your poop watery, but you might have to go often and urgently — you probably know that feeling of running to the nearest toilet, praying you'll make it in time. Diarrhea is a symptom of the flu and other medical problems, but just eating food you're not used to can cause it. If someone can't stop talking, people sometimes use the slang expression diarrhea of the mouth.

Example Sentences

See Examples For:

diarrhea diarrheas

She continued to have severe symptoms such as vomiting and diarrhea after drinking water in the office during 2018, prompting her parents to fly to the United States to take care of her, she wrote.

From Los Angeles Times ● Oct. 13, 2026

People with IBD can experience serious symptoms including rectal bleeding, abdominal pain, diarrhea, fatigue, and weight loss.

From Science Daily ● Sep. 20, 2026

Cyclosporiasis is characterized by explosive diarrhea, and can also cause stomach cramps, nausea and other symptoms.

From The Wall Street Journal ● Sep. 11, 2026

Salmonella infection could result in diarrhea, nausea, headache and stomach cramps.

From Los Angeles Times ● Aug. 11, 2026

“Cats naturally sleep a lot, but excessive rest can be a sign of illness....Other symptoms associated with causes of lethargy include: diarrhea, jaundice, difficulty breathing, hair loss...”

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas

Dietetic Treatment.—Practically the same as in other diarrheas.

From Dietetics for Nurses by Fairfax T. Proudfit

By all sorts of acute reactions, such as skin eruptions, diarrheas, feverish, inflammatory and catarrhal conditions, boils, abscesses, mucopurulent discharges, etc.,

From Nature Cure by Henry Lindlahr

These forcible housecleanings of Nature are colds, catarrh, skin eruptions, diarrheas, boils, ulcers, abnormal perspiration, hemorrhages and many other forms of inflammatory febrile diseases.

From Nature Cure by Henry Lindlahr

In diarrheas the use of fruits and vegetables should be avoided; the best diet after the milk is bread well toasted through, toast-water, soft-boiled eggs, beefsteak, oyster stew, and clam broth.

From The Four Epochs of Woman's Life; a study in hygiene by Anna M. (Anna Mary) Galbraith

The most common forms of these acute purifications are colds, catarrhal and hemorrhoidal discharges, boils, ulcers, abscesses, open sores, skin eruptions, diarrheas, etc.

From Nature Cure by Henry Lindlahr