A machine that is used to control temperature and humidity in an enclosed space.

(chemistry, historical) Oxygen gas, as originally thought to be air deprived of phlogiston (“the hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning”).

A device used to remove contaminants from the air.

A small pocket of air inside a solid, a liquid or surrounded by a colloid within a larger fluid environment.

simple past tense and past participle of air-condition

Equipped with and climate-controlled by air-conditioning; cooled by an air-conditioner.

Alternative form of airtime / The period of freefall after jumping.

atmospheric pressure or barometric pressure. / the (amount of) pressure of air within something

A region's air supply. / The region supplied by a source of air.

Alternative form of airshaft