air duct

noun

1. an enclosure, usually of sheet metal, that conducts heated or conditioned air.

Word History and Origins

Origin of air duct¹

First recorded in 1865–70

Example Sentences

The ancient conception of the artery as an air-duct gave rise to the derivation from Gr.

From Project Gutenberg

Nerve and air duct, therefore, are the essentials; the rest is so much material in reserve for the process of the metamorphosis.

From Project Gutenberg

The air-bladder is double, not cellular, with a large air-duct joining the ventral surface of the œsophagus.

From Project Gutenberg

Thus the efficiency of fireplaces may be materially increased, the degree depending upon the character of the air duct installed.

From Project Gutenberg

But who would think of putting a burglar alarm on an air-duct?

From Project Gutenberg