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

Etymology

Origin of air conditioning

First recorded in 1905–10

Example Sentences

It didn’t have central air conditioning, and it was heated by an old-fashioned boiler.

From Los Angeles Times

Residents were told to shut windows and doors, keep pets inside and turn off air conditioning due to air quality concerns.

From Los Angeles Times

Postdoctoral researcher Dr. Mojtaba Zabihi, the study's first author, explains that room configurations and existing heating, ventilation and air conditioning systems can differ widely.

From Science Daily

One woman passed out flyers for a furnished studio in downtown L.A. with air conditioning, a Murphy bed, an in-unit washer and dryer and streaming TV.

From Los Angeles Times

In one wing, where the Global Renewables Alliance had a stand, there wasn’t any air conditioning.

From The Wall Street Journal