air bladder

1. 1.

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

   Synonymsswim bladderfloat

   Broadersac

Questions about air bladder

What does air bladder mean?

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

What is another word for air bladder?

Close synonyms include swim bladder, float. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is air bladder a common word?

air bladder is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.