- axle steel
- axle trailer
- axle unit
- axle weight
- axle-box
- axle-pin
- axle-tree
- axled
- axoid
- axoloti
- axometer
- axon
- axonal degeneration
- axonometric
- axonometric projection
- axonometric view
- axonometry
- axopetal
- axoplasm
- axoplast
- axopodium
- axosomatic
- axostyle
- ay
- ayah
- ayan
- ayatollah
- aye
- aye-aye
- ayrton shunt
- azalea
- azapetine
- azathloprine
- azeotrope
- azeotropic
- azeotropic distillation
- azeotropic fluid
- azeotropic mixture
- azeotropic point
- azeotropic process
- azeotropic refrigerant
- azerbaijanese
- azide
- azilian
- azimino compound
- azimith
- azimuth
- azimuth angle
- azimuth beam
- azimuth circle
- azimuth clamp
- azimuth closure
- azimuth compass
- azimuth coverage
- azimuth deviation
- azimuth dial
- azimuth distortion
- azimuth drive
- azimuth effect
- azimuth instrument
- azimuth line
- azimuth marker
- azimuth observation
- azimuth plane
- azimuth potentiometer
- azimuth rate
- azimuth resolution
- azimuth scale
- azimuth selsyn
- azimuth sweep
- azimuth thrust
- azimuth traverse
- azimuthal
- azimuthal angle
- azimuthal component
- azimuthal deviation
- azimuthal projection
- azimuthality
- azimuthally motion
- azin
- azo compound
- azo derivative
- azoic
- azoic dye
- azole
- azolla
- azonal
- azonality
- azotaemia
- azote
- azote monoxide
- azotes
- azoth
- azotic
- azotobacter
- azotobacterin
- azotometer
- azoturia
- aztec
- azure