Pertaining to or named from Bartolomeo Eustachio, an Italian anatomist (died 1574).

adjective. Discovered by Eustachius.

adjective. Pertaining to the Eustachian tube.

adjective. a tubular instrument to be introduced into the Eustachian tube so as to allow of inflation of the middle ear through the nose or mouth.

adjective. a passage from the tympanum of the ear to the pharynx. See Ear.

adjective. a crescent-shaped fold of the lining membrane of the heart at the entrance of the vena cava inferior. It directs the blood towards the left auricle in the fetus, but is rudimentary and functionless in the adult.

"On an airplane a baby may cry for their usual reasons, but they may also experience ear pain due to their narrower eustachian tubes behind the eardrum becoming blocked."

Eustachian tube  eustachian canal  eustachian valve  

autogenic  body-function  endotracheal  fallopian  green-glass