Definition |
Category |
| Academic Performance Index | Universities |
| Application Programming Interface | Texting |
| American Petroleum Institute | Professional Organizations |
| Active Pharmaceutical Ingredient | Laboratory |
| Atmospheric Pressure Ionization | Meteorology |
| Air Pollution Index | Meteorology |
| Administración Portuaria Integral | Mexican |
| Animal Protection Institute | Non-Profit Organizations |
| Advanced Photonix, Inc. | AMEX Symbols |
| Asian or Pacific Islander | Regional |
| Anonima Petroli Italiana | Italian |
| Adobe Acrobat Plug-In | File Extensions |
| Armor Piercing Incendiary | Military |
| Alternative Press Index | News & Media |
| American Pirate Industries | Companies & Firms |
| Antecedent Precipitation Index | Environmental |
| Automotive Professionals, Inc. | Companies & Firms |
| American Paper Institute | Professional Organizations |
| Accountants for the Public Interest | Accounting |
| Acquisition Program Integration | US Government |
| After Project Initiation | Military |
| 1st Reader Passed parameter file | File Extensions |
| Accountable Property Inventory | Accounting |
| Angkatan Pemuda Indonesia | Indonesian |
| Lotus 1-2-3 Printer driver | File Extensions |
| Automotive Professionals Inc | Companies & Firms |
| Advance Programming Interface | Software |
| Affluent Parents Index | Law & Legal |
| Agrupación Provincial Independiente | Spanish |
| Adobe Printer Ink file | File Extensions |
| Association of Private Investigators | Professional Organizations |
| Alianza Popular Informativo | Spanish |
| Alianza Popular de Izquierdas | Spanish |
| Application Program Interface file | File Extensions |
| Associazione Primatologica Italiana (Italian Primate Association) | Veterinary |
| Accept Practice And Improve | Educational |
| Arithmetic Processor Interface | Unclassified |
| Academic Perofrmance Index | Academic & Science |
| Automated Pellet Inspection | Unclassified |
| As Per Instructions | Stock Exchange |
| Asian / Pacific Islander | Genealogy |
| Advance Passenger Information | Transportation |
| Athletes Performance Institute | Sports |
| API Group | London Stock Exchange |
| Active Pharmaceutical Item | Pharmacy |
| Alaska Psychiatric Institute | Psychology |
| Aviation Preflight Indoctrination | Military |
| Application Programmable Interface | Unclassified |
| Application Programmer Interface | Unclassified |
| Automatic Programming Interface | Software |
| Astral Projection Isle | Unclassified |
| Application Programming Interfacing | Software |
| Article Periodocal Incollection | News & Media |
| American Petroleum Industry | Energy |
| Associate in Personal Insurance | Insurance |
| Asian Pacific Islander | Asian |
| Automated Processes Inc | Companies & Firms |
| A Profit Increase | Unclassified |
| Academic Programs International | International |
| Active Pharmaceutical Ingredients | Pharmacy |
| Aggregate Programming Interface | Software |
| Android Page Interface | Telecom |
| Applcation Program Interface | Unclassified |
| Application Programming Interfaces | Software |
| Portuguese Association of Informatics | Societies |
| Automotive Parts Interpreter | Automotive |
| Automotive Performance Index | Automotive |
| Australian Property Institute | Societies |
| Australian Pharmaceutical Ind Ltd | ASX Symbols |
| Automotive Process Institute | Automotive |
| Automotive Professionals Inc. | Automotive |
| Auto Price Index | Automotive |
| Asthma Predictive Index | Medical |
| Assume Positive Intent | General Business |
| Autobody Products Inc. | Automotive |
| Application Program Interface | Unclassified |
| Absolute Position Indication | IT |
| Access Preamble Indicator | IT |
| Adobe Printing Inks | IT |
| Agri-Processing Index | Farming & Agriculture |
| Air Pollutant Index | Automotive |
| All Parts In | Products |
| Allocation Programming Identification | Electronics |
| Allocation Programming Interface | Mathematics |
| Alphabet Phonétique International | French |
| Application Proggram Interface | Software |
| Association of British Insurers | Associations |
| Armor Piercing Incendiary ammunition round | Products |
| Arnold P Ishnikov | Unclassified |
| Aromatic PolyImide | Chemistry |
| Asian/Pacific Islander | Regional |
| Asociacion de Periodistas de Internet | IT |
| Asociacion de Proveedores de Internet | IT |
| Asset Priority Index | Software |
| Associação Portuguesa de Informática | Societies |
| Association des Professionnels d'Informatique | IT |
| Association for Pathology Informatics | Associations |
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