• Webster's Revised Unabridged Dictionary
    • a Eustachian (Anat) Discovered by Eustachius.
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Century Dictionary and Cyclopedia
    • eustachian Pertaining to or named from Bartolomeo Eustachio, an Italian anatomist (died 1574).
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Chambers's Twentieth Century Dictionary
    • adj Eustachian ū-stā′ki-an pertaining to the tube leading from the middle ear to the pharynx, or to the rudimentary valve at the entrance of the inferior vena cava in the heart.
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Webster's Revised Unabridged Dictionary
From Eustachi, a learned Italian physician who died in Rome, 1574
Chambers's Twentieth Century Dictionary
Named from the Italian physician Bartolommeo Eustachio (died 1574).


In literature:

The Eustachian tube was closed.
"Anomalies and Curiosities of Medicine" by George M. Gould
I fear that the Eustachian tube question must have cost you a deal of labour; it is quite a complete little essay.
"The Life and Letters of Charles Darwin, Volume II (of II)" by Charles Darwin
I fear you will think me very troublesome, especially when I remind you (not that I am in a hurry) about the Eustachian tube.
"More Letters of Charles Darwin Volume II" by Charles Darwin
There are also little openings, one on each side, from which begin the Eustachian tubes, which lead upward to the ear cavities.
"A Practical Physiology" by Albert F. Blaisdell
The inflammatory process then extended to the Eustachian tubes.
"Beethoven" by George Alexander Fischer
Orifice of the Eustachian tube.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
It forms the Eustachian tube in all other Tetrapoda.
"Form and Function" by E. S. (Edward Stuart) Russell
The Eustachian valve was small, that of Thebesius imperfect.
"Journal of the Proceedings of the Linnean Society - Vol. 3" by Various
Cut off lower jaw, and note posterior nares and Eustachian openings.
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
This in the large majority of cases will subside and drain back again into the throat through the Eustachian tube.
"Preventable Diseases" by Woods Hutchinson

In news:

Cholesteatomas are believed to form as the result of poor eustachian tube function with resultant tympanic membrane retraction and a lack of normal epithelial migration.
The middle ear is connected to the back of the nose by the Eustachian (you-stay-shen) tube.