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

When hydrogen had built up in the unit 3 building, it had backed up into unit 4, too, and been sparked into an explosion in the air ducts on the building’s fourth floor.

Read more on Literature

Most attributed the improvement in smell to the passage of time, cleaning surfaces and air ducts, replacing furnace filters, and removing carpet, textiles and furniture from the home.

Read more on Salon

An air duct cleaning addresses all aspects of your system that air crosses over and can improve air quality and efficiency.

Read more on Seattle Times

He recounted how lightning struck a pond near their Wilmington home, struck a wire and entered their residence through air ducts.

Read more on Washington Times

Some of these pollutants settle onto surfaces, while others penetrate fabrics, stick to walls and enter air ducts.

Read more on Salon