A1W stands for Westinghouse Aircraft Carrier Nuclear Plant (Design 1)
A13c stands for A13 dopamine cell group
a1PI stands for Human Alpha 1-Proteinase Inhibitor
A12N stands for Africanization (A followed by 12 letters, followed by N)
A11 stands for Anchorage Terminal Radar Approach Control
A1NA stands for Alpha1 National Association
A2/AD stands for Anti-Access/Area Denial (US DoD)
A10 stands for alfentanil 10 micrograms/kg A10 stands for aminophylline 10 mg/kg
A20 stands for Douglas DB-7 Havoc (US WWII medium bomber) A20 stands for Address Twenty Lines
A2C2S stands for Army Airborne Command and Control System