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air conditioning

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.
an air-conditioning system or unit.
Origin of air conditioning
Related forms
air-conditioning, adjective


[air-kuh n-dish-uh n] /ˈɛər kənˌdɪʃ ən/
verb (used with object)
to furnish with an air-conditioning system.
to treat (air) with such a system.
1930-35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for air conditioning
  • Central air conditioning and better access for handicapped users are other long-overdue improvements.
  • If one is using air conditioning, then incandescent lights contribute to cooling costs.
  • air conditioning units between rows of equipment help improve cooling efficiency in this simulation.
  • Mfg includes commercial fertilizer, furniture, air conditioning and heating.
  • But in hot weather the bees have another job: apiary air conditioning.
  • The air conditioning, the elevators and the phones were operating erratically.
  • Collect sunlight and extract useful forms of energy from it, rather than expending energy on air conditioning.
  • Both are sweating, even though there's nothing wrong with the air conditioning.
  • We then turn off the air conditioning in the rest of the house for the entire night.
  • Our room faced south and there was of course no air conditioning in that hot hot southwestern climate.
British Dictionary definitions for air conditioning

air conditioning

a system or process for controlling the temperature and sometimes the humidity and purity of the air in a house, etc
Derived Forms
air conditioner, noun


(transitive) to apply air conditioning to
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
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