Access Point Name 
advanced practice nurse 
Asia-Pacific Network 
augmented proportional navigation 
Academic Position Network 
Apalachicola Northern Railroad 
apron 
Access Point Node 
Access Protocol Name 
acquired pendular nystagmus 
acute pyelonephritis 
Adaptive Probabilistic Network 
Adiponectin 
Advance Personal Notification 
advance purchasing notice 
Advanced Practice Nurses 
Advanced Practice Nursing 
Air and Precipitation Network 
Aircraft Procurement 
Aircraft Procurement and Navy 
Aircraft Procurement Navy 
Aircraft Procurement, Navy 
Alliance for Psychosocial Nursing 
aminopeptidase N 
Andrographis paniculata Nees 
Applica Incorporated 
APPLICA, INC. 
Archives of Psychiatric Nursing 
ARINC packet network 
Army Part Number