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

The authorities are investigating a number of food-related outbreaks, including several involving cyclospora, a bacteria that causes explosive diarrhea.

From The Wall Street Journal ● Jul. 24, 2026

Constipation, diarrhea, unusually narrow stools, or a lasting change in normal bowel habits may indicate an underlying problem.

From Science Daily ● Jul. 22, 2026

However, without a confirmed source or a resolution in sight, consumers have to make their own choices about how to avoid contracting Cyclospora cayetanensis — a parasite that causes explosive diarrhea, among other gastrointestinal symptoms.

From MarketWatch ● Jul. 20, 2026

The parasitic disease has made thousands of people sick with debilitating bouts of diarrhea this summer.

From Los Angeles Times ● Jul. 17, 2026

At first, I thought Mrs. Singer had put a diarrhea spell on Annie, but I shrugged off the idea.

From "Winger" by Andrew Smith

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 Lindlahr, Henry

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 Lindlahr, Henry

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 Lindlahr, Henry

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 Galbraith, Anna M. (Anna Mary)

As the fat content of the oatmeal gives it a more laxative effect, it is undesirable to use it at the season in which the summer diarrheas are prevalent.

From Dietetics for Nurses by Proudfit, Fairfax T.