Amplitude Modulation 
Asset Management 
Agile Modeling 
amplitude modulated 
ante meridiem 
Active Matrix 
airlock module 
Active Monitor 
Administrative Module 
Assemblage Management 
Access Module 
Arkansas and Missouri Railroad 
Account Manager 
Acquisition Management 
Air Marshal 
ammeter 
amplitude 
Ante Meridian 
Apogee Motor 
arithmetic mean 
asynchronous mode 
Atmospheric Modeling 
Auxiliary Memory 
auxiliary module 
Access Manager 
Access Mechanism 
Access Method 
Accounting Management 
Actuator Mechanism 
Adaptive Modulation