Dictionary

eustachian tube

noun, eu·sta·chian tube 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

Origin of EUSTACHIAN TUBE

Bartolommeo Eustachio
First Known Use: 1741

eustachian tube

noun , often capitalized E    (Medical Dictionary)

Medical 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, pharyngotympanic tube

Illustration of EUSTACHIAN TUBE

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