A5/2: Encryption Algorithm A5
A8: Algorithm A8
AA: Absolute Address
AA: Access Adapter
AA: Access Agent
AA: Accounting Authority
AA: administrative authority
AA: Alternate Addressing
AA: Application Assistant
AA: Application Association
AA: ATM Adaptor
aA: attoampere
AA: Audit Agent
AA: Auto Answer
AA: Automated Attendant
AA: Automatic Answer
AAA: ATM Access Adapter
AAA: Authentication, Authorization and Accounting
AAA: Authentication, Authorization, Administration
AAA: Automated Acquisition Access
AAAC: All Aluminum Alloy Cable
AAAI: American Association for Artificial Intelligence
AAAS: American Association for the Advancement of Science
AAB: Automatic Alternative Billing
AABN: AMA Alternate Billing Number
AABS: Automated Alternate Billing Service
AABS: Automated Attendant Billing System
AAC: Abbreviated Address Calling
AAC: Access Authorization Certificate
AAC: Advanced Audio Codec
AAC: Aeronautical Administrative Communications
AAC: airline administrative communications
AAC: Application Access Conditions
AAC: Augmentative and Alternative Communications
AAC: Automatic Amplitude Control
AACR: All America Cables and Radio, Inc.
AACS: Air and Airways Communication System
AACS: Attitude and Articulation Control Subsystem
AAD: Analog Alignment Disk
AAE: ATM Adaptation Entity