Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible.

from the GNU version of the Collaborative International Dictionary of English

  • n. A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible.

from The Century Dictionary and Cyclopedia

  • n. In ornithology, the atmosteon or air-bone which conveys air from the tympanic cavity to the pneumatic cavity of the mandible.

Etymologies

See siphon. (Wiktionary)

Examples

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