eustachian eu·sta·chian (yōō-stā'shən, -shē-ən, -kē-ən)
Described by or attributed to Italian anatomist Bartolommeo Eustachio.
Deafness may result from obstruction of the eustachian tube.
The eustachian valve was small, that of Thebesius imperfect.
And, further, be certain that the eustachian tube is free from obstruction.
There is no external ear, no tympanum, and no eustachian tube.
The middle ear is connected with the throat by the eustachian Tube.
When this fails the eustachian tubes are blown out with a Politzer Bag.
The difficulty as revealed by the post-mortem, lay in a thickening of the membrane of the eustachian tubes.
Amongst his discoveries were the eustachian tube and the eustachian valve of the heart.
In health there is no communication between the chamber of the middle ear and the outside, except by the eustachian tube.
His name is enshrined in the eustachian tube named after him.