- abbe theory
- ablating
- ablating momentum
- abnormal occurrence
- Abraham momentum
- absorber rod
- absorption spectrophotometer
- accelerated motion
- accelerating chamber
- accelerator cavity
- acceptor atom
- Abbe refractometer
- aberration
- ablated ion
- absorber plate
- absorption pump
- absorption spectrum
- abundance
- accelerate motion
- abrasion factor
- abrasion tester
- absorber member
- abundance radio
- accelerated
- acceleration
- accelerating
- accelerator
- acceptor
- accessory drive
- achromatize
- accumulator
- accurate reproduction
- achromatic
- achromatic fringes
- achromatism
- achromous
- acid bath
- acid pickling
- acouphony
- acoustic conductance
- acoustic diffraction
- acoustic dispersion
- acoustic emission
- acoustic inertance
- acoustic interferometer
- acoustic mobility
- acoustic oscillation
- acoustic radiometer
- acoustic sensor
- acoustic trauma