From Longman Dictionary of Contemporary Englishair conditioningˈair conˌditioning noun [uncountable] (written abbreviation AC) DHTa system that makes the air in a room or building cooler and drier —air-conditioned adjective
Examples from the Corpus
air conditioning• The sunroof and air conditioning are cost extras.• Ask for the facts on electric air conditioning.• The auto model costs £33,620 and gets air conditioning and a leather-trimmed cabin.• However, air conditioning is standard and there is electric adjustment for mirrors, windows and seats.• These monitor and diagnose any problems occurring in a particular computer system, drops in temperature and changes in air conditioning levels.• The air conditioning units associated with the Library rolling stack shelving on the third floor have been replaced.• The air conditioning was not yet in place.• You can eat inside with air conditioning if you wish but most people prefer the veranda overlooking the Key. 