Meanings
plural air bladders
- An internal organ that fish use to control their buoyancy, allowing them to maintain or change depth by changing their density.
Synonyms: fish maw, gas bladder, swim bladder
- A type of packing material that consists of an airtight bag full of air, used to cushion fragile items.
The company used to be notorious for excessive packaging, and social media grew littered with examples: three pairs of socks wrapped in puffy air bladders[…]
2019 November 21, Samanth Subramanian, “How our home delivery habit reshaped the world”, in The Guardian
Synonyms & antonyms
nounAn internal organ that fish use to control their buoyancy, allowing them to maintain or change depth by changing their density.
More synonyms by meaning
nounan air-filled sac near the spinal column in many fishes that helps maintain buoyancy
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
air bladder. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/air%20bladder
“air bladder.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/air%20bladder. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “air bladder,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/air%20bladder.
Source: air bladder on Wiktionary, CC BY-SA 4.0.