What is a bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible called?
siphonium — A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00