compressed air

American  

noun

1. air compressed, especially by mechanical means, to a pressure higher than the surrounding atmospheric pressure.

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compressed air British  

noun

1. air at a higher pressure than atmospheric pressure: used esp as a source of power for machines

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Etymology

Origin of compressed air

First recorded in 1660–70

Example Sentences

Vanguard also will include a floating structure on the surface of the water to transport compressed air, power the vessel, and allow for communication with the outside world.

From Barron's • Oct. 29, 2025

Don’t use a hair dryer or compressed air on your phone.

From Seattle Times • Feb. 29, 2024

Then came the Windkessel, a chamber in the bottom of a wooden wagon that compressed air to pump water continuously through a hose, creating a steady stream.

From Science Daily • Jan. 23, 2024

The compressed air starts to glow, and when it reaches a temperature of about 2,000 degrees Celsius, the solid material in the meteoroid starts to vaporize.

From Scientific American • Sep. 8, 2023

Tiny gas jets allowed compressed air to squirt out under this base, causing it to rise a fraction of an inch off the surface, so that the machine floated on a cushion of air.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins