eustachian tube

/juˈsteɪʃən ˈtjuːb/

eustachian tube is the alternative letter-case form of Eustachian tube.

Noun capitalized: Eustachian tube

Eustachian tube (plural Eustachian tubes)

In humans and other land vertebrates, a tube that links the nasopharynx to the cavity of the middle ear to allow the equalization of the pressure on both sides of the eardrum.
- Ice water trickled down my eustachian tubes, leaving a cold, bitter taste in my mouth.2016, Rick Riordan, Magnus Chase and the Gods of Asgard: The Hammer of Thor, page 20
Synonyms:

auditory tube, pharyngotympanic tube, salpinx

plural	eustachian tubes
plural	Eustachian tubes

Named after Italian scientist Bartolomeo Eustachi.

What does eustachian tube mean?: Eustachian tube means in humans and other land vertebrates, a tube that links the nasopharynx to the cavity of the middle ear to allow the equalization of the pressure on both sides of the eardrum.
What is eustachian tube the alternative letter-case form of?: Eustachian tube is the alternative letter-case form of Eustachian tube.
What part of speech is eustachian tube?: Eustachian tube is a noun.
How do you pronounce eustachian tube?: Eustachian tube is pronounced /juˈsteɪʃən ˈtjuːb/.
What is the plural of eustachian tube?: The plural of eustachian tube is eustachian tubes.

Adapted from Wiktionary: eustachian tube (page history and authors); Eustachian tube (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-Eustachian tube.wav.

Cite this entry: “eustachian tube.” Word.ws, https://word.ws/eustachian_tube. Based on Wiktionary, CC BY-SA 4.0.