air conditioning

[ airkuhn-dish-uh-ning ]
See synonyms for air conditioning on
  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.

Origin of air conditioning

First recorded in 1905–10
  • Also called AC, A/C, A.C., a/c, a.c. [ey-see] /ˈeɪˈsi/ .

Other words from air conditioning

  • air-con·di·tion·ing, adjective

Words Nearby air conditioning Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use air conditioning in a sentence

British Dictionary definitions for air conditioning

air conditioning

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

Derived forms of air conditioning

  • air conditioner, noun

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