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compressed air

American

noun

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

compressed air British

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of compressed air

First recorded in 1660–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

compressed air

Fuel is injected into the compressed air, and hot exhaust gases exit the back, producing powerful thrust.

From Barron's ● May 19, 2026

StarChase uses compressed air to launch a GPS tracker from a police vehicle onto a fleeing car.

From Los Angeles Times ● May 7, 2026

A hiss and puff of compressed air shapes the smooth leather, bringing to life an all-American cowboy boot in a factory on China's eastern coast.

From BBC ● Jan. 31, 2025

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

From Seattle Times ● Feb. 29, 2024

After being compressed, air would spring back, given an opportunity.

From "The Scientists" by John Gribbin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023