American Power Conversion 
Armored Personnel Carrier 
Agency Program Coordinator 
Ambulatory Payment Classification 
Association for Progressive Communicat… 
asynchronous procedure call 
Adaptive Payload Carrier 
atrial premature contraction 
accounting processing code 
Advanced Process Control 
Aeronautical Passenger Communications 
Account Processing Code 
Activated Protein C 
Adaptive Predictive Coding 
Air Pollution Control 
all-purpose carrier 
Ambulatory Patient Classification 
AMPCO 
antigen presenting cell 
argon purge cart 
Armor Piercing Capped 
Aromatic Polymer Composite 
aspirin, phenacetin, caffeine 
Average Propensity to Consume 
Accident Prevention Council 
Adapted Payload Carrier 
Adaptive Power Control 
adenoma prevention with celecoxib 
adenomatous polyposis coli 
Adjacent Point Code