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eustachian tube

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noun, often capitalized E eu·sta·chian tube \yü-ˈstā-sh(ē-)ən- also -ˈstā-kē-ən-\

Definition of eustachian tube

  1. :  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 and Etymology of eustachian tube

Bartolommeo Eustachio


First Known Use: 1741


Medical Dictionary

eustachian tube

noun , often capitalized E eu·sta·chian tube

Medical Definition of eustachian tube

  1. :  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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