• axes of coordinates
• axial
• axial bearing
• axial buffer disc
• axial canal
• axial compressor
• axial elasto-kinematics
• axial fan
• axial mass moment of inertia
• axial play
• axial ratio
• axial run-out
• axial strut
• axial thrust
• axillary
• axillary seabream
• axing
• axiom
• axiom of countability
• axiom of numerability
• axiomatic
• axiomatics
• axioms
• axis
• axis of abscissas
• axis of ordinates
• axis of rotation
• axis of symmetry
• axis of the earth
• axis ratio
• axle
• axle assembly
• axle bearing
• axle box
• axle keep plate
• axle load
• axle weight
• axles
• ay Sc.
• aye
• azalea
• azimuth
• azimuthal
• azimuthally
• azimuths
• azoospermia
• azote
• azotic
• azure
• azure damsel
• à la carte
• à la jardinière
• à la mode