air-conditioning
UK: ˈeə kənˌdɪʃənɪŋ | US: ˈɛr kənˌdɪʃənɪŋ
n. a system for controlling the temperature, humidity, and sometimes purity of the air in a building or vehicle
vt. the act of cooling or dehumidifying air using such a system
The word "air-conditioning" is a compound formed in the early 20th century, combining "air" (from Old French air, Latin aer, meaning "atmosphere") and "conditioning" (from Latin condicio, meaning "agreement" or "state," later evolving to mean "to regulate"). The term reflects the technological advancement of artificially modifying indoor air quality, blending the natural element ("air") with human control ("conditioning").
The office installed new air-conditioning to combat the summer heat.
Modern cars often come with automatic air-conditioning systems.
Poor air-conditioning can lead to discomfort and reduced productivity.
She adjusted the air-conditioning to a cooler setting.
The hospital maintains strict air-conditioning standards to ensure cleanliness.