eustachian tube
eu·sta·chian tube
noun, often capitalized E\yü-ˈstā-sh(ē-)ən- also -ˈstā-kē-ən-\
Definition of EUSTACHIAN TUBE
: a bony and cartilaginous tube connecting the middle ear with the nasopharynx and equalizing air pressure on both sides of the tympanic membrane —called also auditory tube — see ear illustration
See Origin of EUSTACHIAN TUBE
Bartolommeo Eustachio
First Known Use: 1741
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