ante - asyn
- astatic microphone
- astatic wattmeter
- asterisk
- asterism
- asteroid
- astigmatic beam
- astigmatic foci
- astigmatic resonator
- astigmatically compensated cavity
- astigmatically compensated optical cavity
- astigmatism
- ASTM
- Aston dark space
- astonisher
- astrionics
- Astro
- astrodome
- astroid
- astronomic
- astronomical
- astronomical azimuth
- astronomical day
- astronomical navigation
- astronomical rhythm
- astronomy
- astrophotometry
- astrophysics
- ASVD
- ASW
- asymmetric amplitude modulation
- asymmetric cipher
- asymmetric coupler
- asymmetric cryptosystem
- asymmetric delta modulation
- asymmetric digital subscriber line
- asymmetric digital subscriber loop
- asymmetric DM
- asymmetric DSL
- asymmetric encryption
- asymmetric encryption algorithm
