A3D
A3D stands for Aureal 3-Dimensional (computer sound chip; Aureal Semiconductor, Inc.) A3D stands for Advanced 3-Dimensional Audio
A3N
A3N stands for Alien 3aba6 Network
A4AA
A4AA stands for Area 4 Agency on Aging
A3CR2
A3CR2 stands for American Alliance of Academic Chief Residents in Radiology
A4CM
A4CM stands for Association for Civic Media
A4D
A4D stands for Appetite 4 Destruction
A431
A431 stands for human epidermoid carcinoma cells
A4A
A4A stands for Airlines for America (trade association) A4A stands for Action for Advocacy (UK) A4A stands for Architects for Aid (now Article 25) A4A stands for Art for Architecture (United Kingdom) A4A stands for Anarchy for Anybody
A3C
A3C stands for Airman Third Class
A97M
A97M stands for Access 97 Macro Virus