air conditioning

regulation of air humidity and temperature (i.e. in a building)

v. install an air conditioning system; cool and control the humidity and temperature in a room or building

The term air conditioning most commonly refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air. An air conditioner (AC or A/C in North American English, aircon in British and Australian English) is an appliance, system, or mechanism designed to stabilise the air temperature and humidity within an area (used for cooling as well as heating depending on the air properties at a given time) , typically using a refrigeration cycle but sometimes using evaporation, most commonly for comfort cooling in buildings and transportation vehicles.
See more at Wikipedia.org...

Noun
1. a system that keeps air cool and dry
(synonym) air conditioner
(hypernym) cooling system, cooling
(derivation) air-condition

Verb
1. control the humidity and temperature of; "The room was cool because it had been air-conditioned"
(hypernym) process, treat
(derivation) air conditioner, air conditioning
2. equip with an apparatus for controlling the humidity and temperature; "Our house is not air-conditioned"
(hypernym) supply, provide, render, furnish
(derivation) air conditioner, air conditioning
(classification) architecture

The simultaneous controlling of the characteristics of air, such as temperature, humidity, cleanliness, motion, and pollutant concentration, in a space to meet the requirements of the occupants, a process, or equipment. Synonym environmental control.

Synonyms and related words:
adiabatic absorption, adiabatic demagnetization, adiabatic expansion, aerage, aeration, air cooling, airing, blast freezing, chilling, congealment, congelation, cooling, cross-ventilation, cryogenics, deep freezing, dehydrofreezing, electric refrigeration, food freezing, freezing, gas refrigeration, glaciation, glacification, infrigidation, mechanical refrigeration, oxygenation, oxygenization, perflation, quick freezing, reduction of temperature, refreezing, refreshment, refrigeration, regelation, sharp freezing, super-cooling, ventilation,