(Anat.) 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.
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"Air bladder" Quotes from Famous Books ![]() ![]() — Handwork in Wood • William Noyes |
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