air conditioning

American  

[air kuhn-dish-uh-ning] / ˈɛər kənˈdɪʃ ə nɪŋ /

noun

1. 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.

2. an air-conditioning system or unit.

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air conditioning British  

noun

1. a system or process for controlling the temperature and sometimes the humidity and purity of the air in a house, etc

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Other Word Forms

• air conditioner
  noun
• air-conditioning
  adjective

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Etymology

Origin of air conditioning

First recorded in 1905–10

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Example Sentences

See Examples For:

air conditioning

These reductions are significant because chlorofluorocarbons and other ozone-depleting compounds were once common in refrigerators, air conditioning systems, building insulation, and other everyday products.

From Science Daily ● Nov. 11, 2026

Two weeks earlier, the Patriot team rode in a yellow school bus without air conditioning on a 100-degree day to an away game at Ramona.

From Los Angeles Times ● Nov. 1, 2026

The truck's air conditioning malfunctioned, and the temperature inside soared as it drove north to San Antonio, Texas.

From Barron's ● Oct. 20, 2026

He jacked up the air conditioning and hit the gas.

From The Wall Street Journal ● Oct. 15, 2026

It was stuffy and just cool enough to remind you that the building had air conditioning, but some budget or moral constraint kept it from being used to make things very comfortable.

From "The Serpent King" by Jeff Zentner

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