acti - allo
- adaptive filtering
- adaptive logic
- adaptive mirror
- adaptive multiplexing
- adaptive optics
- adaptive process
- adaptive quantization
- adaptive radar
- adaptive system
- adaptive telescope
- adaptometer
- adatom
- adatom capture
- adatom lifetime
- add
- add in phase
- add pulse
- add termwise
- add vectorially
- added stress
- adder
- adder circuit
- adding interferometer
- adding radiointerferometer
- addition
- addition agent
- addition law
- addition reaction
- additional
- additional charge
- additional condition
- additional coupling
- additional heating
- additional mass
- additional mass correction
- additional wave
- additive
- additive background
- additive color
- additive color mixing