Lacking or being without air. / Lacking air circulation. / With air that is stale. / (medicine) Suffering from asphyxia. / (figuratively) Stifling; dead; lacking vitality or excitement.

Alternative spelling of air vice-marshal

Alternative letter-case form of air marshal (found when the term is used as a title).

Initialism of Andelssamfundet i Hjortshøj, a Danish Eco-community, Association (85 houses, 250 people) / Initialism of Architecture in Helsinki, an Australian music band

Initialism of artificial insemination by husband.

A holder of the most senior active rank in the Royal Air Force, NATO grade OF-9.

Alternative letter-case form of air commodore (found when the term is used as a title).

Alternative spelling of air conditioner

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”).