Definition of air-conditioning
: a system used for cooling and drying the air in a building, room, etc. <She wanted her house to have air-conditioning.> —often used before another noun <an air-conditioning system>
Word by Word Definitions
: to equip (something, such as a building) with an apparatus for washing air and controlling its humidity and temperature
: to subject (air) to these processes
Seen and Heard
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