A-T stands for Ataxia Telangiectasia (form of muscular weakness)
A-TCET stands for Anti-Terrorism Contraband Enforcement Team
A-TDMA stands for Advanced TDMA (Time Division Multiple Access)
A-TES stands for Advanced-Tactical Engagement Simulation (Army, live training)
A-TESS stands for Army Tactical Engagement Simulation System (US Army)
A-TOR stands for Automated-Telex Over Radio
A-TRAC stands for Active Traction Control
AV stands for Abrasion Value (engineering/geology) AV stands for Absolute Virtue (Final Fantasy XI gaming) AV stands for Access Verification…
A-VIDD stands for Audio Video Integrated Digital Design (California)
A-VLRC stands for Audio-Visual Learning Resource Center (Georgetown University)