- a vesicle or sac containing air.
- Also called gas bladder, swim bladder. Ichthyology. a gas-filled sac located against the roof of the body cavity of most bony fishes, originally functioning only as a lung, now serving in many higher fishes to regulate hydrostatic pressure.
Origin of air bladder
Related Words for air bladderfloat
Examples from the Web for air bladder
Historical Examples of air bladder
I believe he is rising now from some management of the air-bladder.Jack at Sea
George Manville Fenn
The air-bladder large and strong, and in some cases notched on the margin.The Ocean World:
But the primal purpose of the air-bladder was not to serve as a float.
In the sharks, rays, and chimæras there is no trace of an air-bladder.
The elasticity of the air enables fishes to rise and sink in water, through the action of the air-bladder.
- Also called: swim bladder ichthyol an air-filled sac, lying above the alimentary canal in bony fishes, that regulates buoyancy at different depths by a variation in the pressure of the air
- any air-filled sac, such as one of the bladders of seaweeds
- An air-filled sac in many fish that helps maintain buoyancy or, in some species, helps in respiration, sound production, or hearing. Also called swim bladder
- See float.