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WordReference Random House Unabridged Dictionary of American English © 2024tra•che•al (trā′kē əl or, esp. Brit., trə kē′əl),USA pronunciation adj. - [Anat., Zool.]pertaining to or connected with the trachea or tracheae.
- [Bot.]of the nature of or composed of tracheae or vessels.
WordReference Random House Learner's Dictionary of American English © 2024tra•che•a /ˈtreɪkiə/USA pronunciation n. [countable], pl. -che•ae /-kiˌi/USA pronunciation -che•as. - Anatomy(in air-breathing animals with backbones) a tube from the back of the throat to the lungs that serves as a passageway for air.
tra•che•al, adj. WordReference Random House Unabridged Dictionary of American English © 2024tra•che•a (trā′kē ə or, esp. Brit., trə kē′ə),USA pronunciation n., pl. tra•che•ae (trā′kē ē′ or, esp. Brit., trə kē′ē),USA pronunciation tra•che•as. - [Anat., Zool.]the tube in humans and other air-breathing vertebrates extending from the larynx to the bronchi, serving as the principal passage for conveying air to and from the lungs;
the windpipe. See diag. under lung. - (in insects and other arthropods) one of the air-conveying tubes of the respiratory system.
- [Bot.]vessel (def. 5).
- Greek trācheîa, short for artēría trācheîa rough artery, i.e., windpipe
- Medieval Latin trāchēa, for Late Latin trāchīa
- Middle English trache 1350–1400
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