Definition

Noun: A system or process for controlling the temperature, humidity, and sometimes purity of the air within a building or vehicle, typically to provide a cool and comfortable environment.

Usage

"Air conditioning" is an uncountable noun. It refers to the technology, system, or the cooled air itself. It is commonly abbreviated as "A/C" or "AC".

Examples

• The office building has modern air conditioning.
• We had to repair the car's air conditioning before our summer trip.
• Could you turn up the air conditioning? It's very warm in here.
• The hotel room was comfortable thanks to the air conditioning.

Advanced Usage

• Central air conditioning: A system that cools an entire building from one central unit, as opposed to individual window units.
  • Installing central air conditioning increased the home's value.
• Air-conditioning unit: The physical appliance that provides cooled air.
  • The noisy air-conditioning unit outside the window kept me awake.

Variants and Related Words

• Air-condition (verb): To equip with or cool by air conditioning.
  • They decided to air-condition the entire warehouse.
• Air-conditioned (adjective): Describing a space that is cooled by air conditioning.
  • We waited in an air-conditioned lobby.

Synonyms

• Cooling system
• Climate control (a broader term that can include heating)

Related Phrases

• Air conditioning vent/duct: The opening through which conditioned air flows into a room.
  • The cold air blows directly from the air conditioning vent.
• Air conditioning repair/service: Maintenance work on an air conditioning system.
  • We schedule air conditioning service every spring.

Noun

1. a system that keeps air cool and dry