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Definition of: physostomous
(fī·sos′tə·məs) adjective Zool.
Having the air bladder united by a duct with the intestinal canal, as in certain teleost fishes. Also phy·so·stom·a·tous (fī′sō·stom′ə·təs). [<NL physostomus <Gk. physa a bladder + stoma a mouth]
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