an enclosure, usually of sheet metal, that conducts heated or conditioned air.
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How to use air duct in a sentence
Many of the interactive elements have been modified to reduce contact, but some elements are temporarily closed — including the sections in which visitors crawl through an air duct, and attempt to escape East Berlin by hiding in a Trabant.The Smithsonian and National of Gallery of Art have closed. Here’s what’s still open. | Fritz Hahn | November 23, 2020 | Washington Post
The ancient conception of the artery as an air-duct gave rise to the derivation from Gr.
Nerve and air duct, therefore, are the essentials; the rest is so much material in reserve for the process of the metamorphosis.The Life of the Fly | J. Henri Fabre
The air-bladder is double, not cellular, with a large air-duct joining the ventral surface of the œsophagus.A Guide to the Study of Fishes, Volume 1 (of 2) | David Starr Jordan
Thus the efficiency of fireplaces may be materially increased, the degree depending upon the character of the air duct installed.Farmers' Bulletin 1230 - Chimneys & Fireplaces | A. M. Daniels
But who would think of putting a burglar alarm on an air-duct?The Romantic Analogue | W.W. Skupeldyckle