air distribution box - alluvial terrace
- airbrake
- airbrake hose
- airbreaker
- airbreaking
- airbrick
- airbridge
- airbrush
- aircock
- aircraft
- aircraft dope
- aircraft fleet mix
- aircraft lacquer
- aircraft mix
- aircraft parking apron
- aircraft survey
- airdox
- airdraulic accumulator
- airdrome
- airer
- airfield
- airfield cone penetrometer
- airfield construction
- airfield index
- airfield soil classification
- airfield soil classification system
- airflow
- airflow meter
- airfoil blade
- airfree
- airfree concrete
- airheater
- airhouse
- airing
- airing cupboard
- airing panel
- airleg
- airleg-mounted
- airless
- airless paint spray
- airless paint sprayer