API
API most often refers to a set of rules that let software programs interact, and it also denotes the active ingredient in a pharmaceutical product.
Medical
Miscellaneous
Automated Pellet Inspection
Astral Projection Isle
Arithmetic Processor Interface
Arnold P Ishnikov
Applcation Program Interface
Application Programmable Interface
Community
Governmental
Armor Piercing Incendiary
Antecedent Precipitation Index
Affluent Parents Index
Acquisition Program Integration
After Project Initiation
Aviation Preflight Indoctrination
Advance Passenger Information
International
Angkatan Pemuda Indonesia
Agrupación Provincial Independiente
Alianza Popular de Izquierdas
Alianza Popular Informativo
Anonima Petroli Italiana
Administración Portuaria Integral
Alphabet Phonétique International
Academic & Science
Academic Performance Index
Air Pollution Index
Atmospheric Pressure Ionization
Alaska Psychiatric Institute
Aromatic PolyImide
Academic Perofrmance Index
Asian / Pacific Islander
Regional
Computing
Application Programming Interface
1st Reader Passed parameter file
Adobe Printer Ink file
Application Program Interface file
Advance Programming Interface
Asset Priority Index
Adobe Acrobat Plug-In
Application Programming Interfacing
Business
American Petroleum Institute
Advanced Photonix, Inc.
Accountants for the Public Interest
Automotive Professionals, Inc.
American Paper Institute
American Pirate Industries
Association of Private Investigators
Armor Piercing Incendiary ammunition round
As Per Instructions
API Group
Australian Pharmaceutical Ind Ltd
Accountable Property Inventory
Automated Processes Inc