air - anti
- altitude test
- altitude test chamber
- altitude test facility
- altitude-conversion table
- altitude-finding radar
- altitude-grade gasoline
- altitude-limit indicator
- altitude/temperature chamber
- ALTOCC
- altocumulus cloud
- altostratus cloud
- ALTR
- ALU
- alum
- Alumel
- alumetizing
- alumina
- alumina brick
- alumina ceramic
- alumina fiber
- alumina gel
- alumina inclusion
- alumina modulus
- alumina pellet
- alumina ratio
- alumina refractory
- alumina support
- alumina [aluminous] cement
- alumina-base catalyst
- alumina-silicate refractory
- aluminate
- aluminate drilling mud
- aluminium
- aluminize
- aluminized coating
- aluminized steel
- aluminizing
- aluminosilicate
- aluminosilicate glass
- aluminosilicate mortar