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

They are smaller than an air conditioning unit, at about 2 feet wide and deep and 3 feet tall.

From The Wall Street Journal

Common household devices such as fans and air conditioning systems also produce broadband noise.

From Science Daily

Then came the invention of air conditioning, but Friday’s Mission League tournament semifinals were also super hot in terms of intensity and top performances.

From Los Angeles Times

"We do not use air conditioning, and this year we did not use the boiler," she said as she held a placard that read "electricity service is a right".

From Barron's

Demand for cooling will "drastically" increase in giant countries like Brazil, Indonesia and Nigeria, where hundreds of millions of people lack air conditioning or other means of beating the heat.

From Barron's