airtightness
air-time
air-tinting
air-tired
air-to-air
air-to-electric
air-to-glass
air-to-ground
air-to-water
air-trap
  air-tube
air-turbine
airturboramjet
air-type
air-vapor
air-vent
air-ventilation
air-wall
air-water
airway
airworthiness