bladder

noun

blad·​der ˈbla-dər 

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

bladderlike

ˈbla-dər-līk 

adjective

Examples of bladder in a Sentence

Recent Examples on the Web

In some cases, making some adjustments to bladder habits can help compensate for the changes that occur in bladder health with age. — Amber J. Tresca, Verywell Health, 14 Aug. 2026

Severe back pain combined with bladder dysfunction can signal compression of the nerves at the base of the spinal cord. — Jackson Thompson, FOXNews.com, 12 Aug. 2026

Many paralyzed cats cannot relieve themselves independently and may need manual bladder and bowel expression on a regular schedule. — Pat Mueller, USA Today, 7 Aug. 2026

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

Phrases Containing bladder

• air bladder
• bashful bladder
• bashful bladder syndrome
• bladder campion
• bladder kelp
• bladder worm
• bladder wrack
• giant bladder kelp
• shy bladder
• shy bladder syndrome
• swim bladder
• urinary bladder

Rhymes for bladder

• adder
• ladder
• madder
• sadder
• gallbladder
• stepladder

Kids Definition

bladder

noun

blad·​der ˈblad-ər 

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

bladderlike

-ˌlīk 

adjective

Medical Definition

bladder

noun

blad·​der ˈblad-ər 

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