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diuretic

American  
[dahy-uh-ret-ik] / ˌdaɪ əˈrɛt ɪk /

adjective

  1. increasing the volume of the urine excreted, as by a medicinal substance.


noun

  • diuretics
    plural
  1. a diuretic medicine or agent.

diuretic British  
/ ˌdaɪjʊˈrɛtɪk /

adjective

  1. acting to increase the flow of urine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a drug or agent that increases the flow of urine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
diuretic Scientific  
/ dī′ə-rĕtĭk /
  1. A substance or drug that tends to increase the discharge of urine. Diuretics are used in the treatment of high blood pressure, edema, and other medical conditions.


diuretic Cultural  
  1. A substance that increases the rate of urine production.


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of diuretic

First recorded in 1375–1425; Middle English d(i)uretik, from Late Latin diūrēticus, from Greek diourētikós, from di- di- 3 + ourē- (verb stem of oureîn “to urinate”; cf. uro- 1 ( def. )) + -tikos -tic

Explanation

A diuretic is anything — food, drink, or medicine — that increases the flow of urine. In other words, it makes you pee. Usually, going "number one" is no big deal, but sometimes people have trouble going. That's where diuretics come in: they make you urinate more. A common reason to take diuretics would be a problem with your kidneys. Taking a diuretic can be very important in getting excess water and also toxins out of your body. Coffee and alcohol aren't usually recommended by doctors, but they're also diuretics since they tend to make you urinate.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The document, she says, noted the time the women arrived for their interviews, when the diuretic was administered, how long it took before they urinated, and what underwear they were wearing.

From BBC Aug. 19, 2026

In that case, Judge Keith Ellison defined “heat-sensitive” broadly, covering people taking antipsychotic, anticholinergic, or diuretic drugs, along with anyone diagnosed with psychiatric conditions, obesity, diabetes, or hypertension, among other things.

From Slate Jul. 31, 2026

Coffee acts as a diuretic and can lower blood pressure.

From The Wall Street Journal Jul. 20, 2026

Though caffeine is a diuretic, consuming up to 400 mg of it daily can actually help with hydration, according to the Academy of Nutrition and Dietetics’ King.

From Los Angeles Times Jul. 22, 2024

Aureliano Segundo submitted secretly to the burning baths of permanganate and to diuretic waters, and both were cured separately after three months of secret suffering.

From "One Hundred Years of Solitude" by Gabriel Garcia Marquez

Police believed Nègre had used diuretics, which are used to manage a number of medical conditions, including high blood pressure, and cause the body to produce excess urine.

From BBC Aug. 19, 2026

Furthermore, many patients do not respond to diuretics, and about half of patients are discharged with persistent congestion.

From Science Daily Apr. 25, 2024

Many blood pressure pills such as thiazide diuretics deplete the body of potassium.

From Seattle Times Apr. 24, 2024

She points out that certain medications—including some psychiatrics, diuretics, stimulants and antihistamines—can reduce the body’s ability to manage heat.

From Scientific American Sep. 21, 2023

Purgatives and diuretics are particularly numerous, and the medicines take the form of pillules, draughts, liniments, fumigations, &c.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1 "Edwardes" to "Ehrenbreitstein" by Various

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