air - anti
- angular-displacement test
- angular-position encoder
- angular-time multiplexing
- angularity
- angularly encoded holograms
- anharmonic curve
- anharmonic resonance
- anhedral wing
- anhydride
- anhydrous alcohol
- anhydrous ferric chloride
- anhydrous hydrogen bromide
- anhydrous hydrogen fluoride
- anhydrous lime
- anhydrous plaster
- anhydrous sodium metasilicate
- anhysteretic magnetization
- anhysteretic magnetization curve
- anicut
- anilin