air conditioning
Americannoun
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a system or process for controlling the temperature, humidity, and sometimes the purity of the air in an interior, as of an office, theater, laboratory, or house, especially one capable of cooling.
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an air-conditioning system or unit.
noun
Other Word Forms
Etymology
Origin of air conditioning
First recorded in 1905–10
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.
“There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors,” the heat advisory said.
From Los Angeles Times ● Jul. 13, 2026
On Friday the UK's advertising watchdog warned claims in adverts for some portable air conditioning units, shown on Facebook and YouTube, were "too good to be true".
From BBC ● Jul. 10, 2026
U.S. natural gas futures edged up in rangebound trading with strong power-sector demand to meet air conditioning needs offset by adequate supply.
From The Wall Street Journal ● Jul. 9, 2026
The temperatures were so hot in France that the lack of air conditioning in many parts of hospitals is posing a health risk.
From Los Angeles Times ● Jul. 6, 2026
A Ford Mustang this was, maroon, with cream-colored bucket seats and air conditioning.
From "Typical American" by Gish Jen
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
