1
a
: a membranous sac in animals that serves as the receptacle of a liquid or contains gas
especially : urinary bladder
b
: a gas- or air-filled vesicle in certain algae and aquatic plants (such as rockweed) : air bladder sense b
2
: something (such as the rubber bag inside a football) resembling a bladder

Examples of bladder in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Kari was confined to a wheelchair and had to have her gall bladder removed. — Marlow Stern, Variety, 24 Sep. 2026 Evidence suggests arugula and other cruciferous vegetables may help fend off bladder, breast, colon, lung, pancreatic and prostate cancers. — Hanna Wickes, Fort Worth Star-Telegram, 23 Sep. 2026 Evidence suggests arugula and other cruciferous vegetables could help fight certain cancers, with glucosinolates potentially helping fend off bladder, breast, colon, lung, pancreatic and prostate cancer. — Hanna Wickes, Miami Herald, 23 Sep. 2026 HazelJo was diagnosed at birth with bladder exstrophy, anal and urogenital canal fusion and chronic kidney disease, among other conditions, per GoFundMe. — Escher Walcott, PEOPLE, 23 Sep. 2026 See All Example Sentences for bladder

Word History

Etymology

Middle English, from Old English blǣdre; akin to Old High German blātara bladder, Old English blāwan to blow

First Known Use

before the 12th century, in the meaning defined at sense 1a

Time Traveler
The first known use of bladder was before the 12th century

Browse Nearby Words

Cite this Entry

“Bladder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bladder. Accessed 6 Oct. 2026.

Kids Definition

1
: a pouch in an animal in which a liquid or gas is stored
especially : one into which urine passes from the kidneys and is stored temporarily until discharged by way of the urethra
2
: something resembling a bladder
especially : a bag or container that can be blown up with air

Medical Definition

1
: a membranous sac in animals that serves as the receptacle of a liquid or contains gas
especially : urinary bladder
2
: a vesicle or pouch forming part of an animal body
the bladder of a tapeworm larva
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