(medicine, pathology) A prodromal phase of infection with the human immunodeficiency virus.

plural of AIDS-related complex

(military, aviation) Synonym of anti-aircraft

(informal) Alternative form of freedom is not free

plural of change of air

Alternative form of airwalk

A household appliance serving the combined functions of an air purifier and a humidifier; it can be a standalone appliance or be included as a part of an air conditioning system.

Alternative spelling of air raid siren

plural of air-raid siren

plural of air horn