Definitions for air bladder

This page provides all possible meanings and translations of the word air bladder

Random House Webster's College Dictionary

air′ blad`der(n.)

  1. a vesicle or sac containing air.

  2. an air-filled sac at the top of the body cavity in bony fishes, serving in most to regulate hydrostatic pressure.

    Category: Ichthyology

    Ref: Also called swim bladder.

Origin of air bladder:

1725–35

Princeton's WordNet

  1. air bladder, swim bladder, float(noun)

    an air-filled sac near the spinal column in many fishes that helps maintain buoyancy

Wiktionary

  1. air bladder(Noun)

    An internal organ that fish use to control their buoyancy, allowing them to maintain or change depth by changing their density.

Webster Dictionary

  1. Air bladder

    an air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus

  2. Air bladder

    a sac or bladder full of air in an animal or plant; also an air hole in a casting

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