bladder

American  

[blad-er] / ˈblæd ər /

noun

1. Anatomy, Zoology.

   1. a membranous sac or organ serving as a receptacle for a fluid or air.

   2. urinary bladder.

2. Pathology. a vesicle, blister, cyst, etc., filled with fluid or air.

3. Botany. an air-filled sac or float, as in certain seaweeds.

4. something resembling a bladder, as the inflatable lining of a football or basketball.

5. an air-filled sac, usually made to resemble a club, used for beatings in low comedy, vaudeville, or the like.

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bladder British  

/ ˈblædə /

noun

1. anatomy a distensible membranous sac, usually containing liquid or gas, esp the urinary bladder

2. an inflatable part of something

3. a blister, cyst, vesicle, etc, usually filled with fluid

4. a hollow vesicular or saclike part or organ in certain plants, such as the bladderwort or bladderwrack

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bladder Scientific  

/ blăd′ər /

1. A sac-shaped muscular organ that stores the urine secreted by the kidneys, found in all vertebrates except birds and the monotremes. In mammals, urine is carried from the kidneys to the bladder by the ureters and is later discharged from the body through the urethra.

2. An air bladder.

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bladder Cultural  

1. A stretchable saclike structure in the body that holds fluids. The term is used most often to refer to the urinary bladder, which is part of the excretory system. Another kind of bladder is the gallbladder.

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Other Word Forms

• bladderless adjective
• bladderlike adjective
• bladdery adjective

Etymology

Origin of bladder

before 900; Middle English; Old English blǣddre, blǣdre bladder, blister, pimple; cognate with Old Norse blāthra, dialectal Dutch bladder, German Blatter; akin to blow ²

Example Sentences

It felt as if a boxer had used my bladder as a punching bag.

From Slate • Apr. 18, 2026

"We have a massive coffee culture now and people don't realise the impact coffee has on their bladder muscle which can cause increased urinary frequency," she said.

From BBC • Apr. 8, 2026

Pelvic floor muscles are a sling-like layer of muscles spanning the bottom of the pelvis, crucial for supporting the bladder, bowel, and uterus.

From BBC • Apr. 8, 2026

Anktiva is approved for some patients in the U.S. for the treatment of nonmuscle invasive bladder cancer.

From Barron's • Mar. 24, 2026

Uncle Henry and Pa were jolly, and there would be spare-ribs for dinner, and Pa had promised Laura and Mary the bladder and the pig’s tail.

From "Little House in the Big Woods" by Laura Ingalls Wilder