Eustachian
Eustachian Eu*sta"chi*an, a. [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as, Eustachian catheter. [1913 Webster]

{Eustachian catheter}, 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.

{Eustrachian tube} (Anat.), a passage from the tympanum of the ear to the pharynx. See {Ear}.

{Eustachian valve} (Anat.), 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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • eustachian — yüˈstāshən also āshēən or ākēən adjective Usage: often capitalized Etymology: Bartolommeo Eustachio died 1574 Italian anatomist + English an : of or relating to Eustachio or to the eustachian tube : located in or adjoining the eustachian tube …   Useful english dictionary

  • eustachian — Described by or attributed to Eustachio. * * * eu·sta·chi·an (u staґke ən) named for Bartolommeo Eustachio (L. Eustachius), Italian anatomist, 1524–1574, as the eustachian muscle, tube, or valve …   Medical dictionary

  • Eustachian — adj. Eustachian is used with these nouns: ↑tube …   Collocations dictionary

  • eustachian — adj. of or pertaining to the Eustachian tube (canal connecting the middle ear to the pharynx) …   English contemporary dictionary

  • eustachian — eu·sta·chian …   English syllables

  • Eustachian catheter — Eustachian Eu*sta chi*an, a. [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as, Eustachian catheter. [1913 Webster] {Eustachian catheter}, a… …   The Collaborative International Dictionary of English

  • Eustachian valve — Eustachian Eu*sta chi*an, a. [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as, Eustachian catheter. [1913 Webster] {Eustachian catheter}, a… …   The Collaborative International Dictionary of English

  • eustachian valve — n, often cap E a crescent shaped fold of the lining membrane of the heart at the entrance of the inferior vena cava that directs the blood through the foramen ovale to the left atrium in the fetus but is rudimentary and functionless in the adult… …   Medical dictionary

  • Eustachian tube — so called for Italian physician Bartolomeo Eustachio (d.1574), who discovered the passages from the ears to the throat. His name is from L. Eustachius (see EUSTACE (Cf. Eustace)) …   Etymology dictionary

  • Eustachian tube — ► NOUN Anatomy ▪ a narrow passage leading from the pharynx to the cavity of the middle ear, permitting the equalization of pressure on each side of the eardrum. ORIGIN named after the Italian anatomist Bartolomeo Eustachio (died 1574) …   English terms dictionary

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