- abrasion test
- abrasion testing
- abrasion-proof
- abrasive closure
- abrasive crystal
- abrasive disc
- abrasive medium
- abrasive powder
- abrasive resistance
- abrasive sheet
- abrasive surface
- abrasive wear
- abrasives
- abreast connection
- abridge
- abridged edition
- abridgment
- abrogate
- abrupt
- abrupt junction
- abrupt shore
- abruption test
- abscissa axis
- abscond
- absolute
- absolute address
- absolute addressing
- absolute altitude
- absolute ampere
- absolute code
- absolute command
- absolute coordinate
- absolute data
- absolute deviation
- absolute elevation
- absolute function
- absolute height
- absolute humidity
- absolute instruction
- absolute magnetometer
- absolute movement
- absolute number
- absolute order
- absolute path
- absolute permittivity
- absolute plotting
- absolute pressure
- absolute temperature
- absolute tense
- absolute term