Definition of swim bladder in English:

swim bladder

Line breaks: swim blad|der

noun

Zoology
  • A gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
    More example sentences
    • An important organ seen in ray-finned fish but not in cartilaginous fish is the swim bladder.
    • A characteristic of the family Gobiidae is the absence of a swim bladder, which is used for buoyancy control.
    • Some fish, for example, have processes from the swim bladder to the inner ear to transmit airborne vibrations.

More definitions of swim bladder

Definition of swim bladder in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day maelstrom
Pronunciation: ˈmālˌsträm
noun
a powerful whirlpool in the sea

Shop for an Oxford dictionary

Find the perfect Oxford dictionary for you in our online shop.
SHOP NOW ►