noun si·pho·ni·um \sīˈfōnēəm\

Definition of siphonium



  1. :  a bony tube in some birds connecting the tympanum with the air chambers of the articular piece of the mandible

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Origin and Etymology of siphonium

New Latin, from Greek siphōnion, diminutive of siphōn tube, siphon — more at siphon

Seen and Heard

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a trip made at another's expense

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