sort by Rank | Alpha
| Possible Meanings | Rank |
| Antitrust Procedures and Penalties Act | **** |
| Australian Professional Photography Award | **** |
| Australasian Promotional Products Association | **** |
| Australian Promotional Products Association | **** |
| And the American Public Power Association | *** |
| American Philosophical Practitioners Association | *** |
| Africans in Partnership Against | *** |
| And A Philosophical Practitioner | *** |
| Australian Primary Principals Association | *** |
| Association of Pretrial Professionals | *** |
| Association on Probation Parole | *** |
| African Petroleum Producers Association | *** |
| American Parole and Probation Association | *** |
| Australian Peacekeepers and Peacemakers Association | *** |
| A Paper Presented by the Author | *** |
| Appreciative Participatory Planning and Action | *** |
| Association des Personnes en Perte Auditive | *** |
| Advance the Purposes of the Association | *** |
| American Pool Players Association | *** |
| Amateur Poker Players of America | *** |
| Air Pollution Prevention Act | *** |
| Australian Professional Photography Awards | ** |
| 2-amino-3-phosphono-propionic acid | ** |
| 4-amidinophenyl-pyruvic acid | ** |
| Asia Pacific Privacy Authorities | ** |
| Australian Pharmaceutical Physicians Association | ** |
| Asia Pacific Peoples Assembly | ** |
| American Paper and Pulp Association | ** |
| American Physician Partners Association | ** |
| Auckland Primary Principals Association | ** |
| American Physical Plant Association | ** |
| Asian Pacific Publishers Association | ** |
| Adelaide Parklands Preservation Association | ** |
| amidinopiperidine-4-propionic acid | ** |
| Atlas Peer to Peer Architecture | ** |
| RS)-2-Amino-3-(3-hydroxy-5-phenyl-4-isoxazolyl)propionic acid | ** |
| Alaskans Promoting Physical Activity | ** |
| Australasian Promotional Product Association | ** |
| American Pastured Poultry Association | ** |
| Asia Pacific Publishers Association | ** |
| Alberta Professional Photograhers Association | ** |
| Australian Pitch and Putt Association | ** |
| Asian Pacific Pediatric Association | ** |
| Atlanta Post Polio Association | ** |
| Agronomy Plant Physiology and Agroecology | ** |
| Alberta Prehospital Professions Association | ** |
| America Public Power Association | ** |
| Air Pollution Prevention Association | ** |
| Arkansas Professional Photographers Association | ** |
| Asia Pacific Partner Academy | ** |
| Alberta Party Political Association | ** |
| American Probation Parole Association | ** |
| Arizona Professional Photographers Association | ** |
| Association of Psychiatric Physician Assistants | ** |
| American Physicians Poetry Association | ** |
| Alberta Pork Producers Alliance | ** |
| Australian Peacekeepers Peacemakers Association | ** |
| Aquamarine Protection and Preservation Alliance | ** |
| Arkansas Press Photographers Association | ** |
| Advertising Pre Press Association | ** |
| Atlanta Print Production Association | ** |
| Atlantic Public Purchasing Association | ** |
| Asian and Pacific Physicians Association | * |
| Australian Prawn Promotion Association | * |
| American Professional Palmistry Association | * |
| And Petroleum Producers Awareness | * |
| American Private Physicians Association | * |
| American Public Power Administration | * |
| Advisory Panel for Presidential Appointments | * |
| African Petroleum Producing Association | * |
| Alanine Phenylalanine Proline Arylamidase | * |
| Australian Pitch Putt Association | * |
| Australian Professional Piercing Association | * |
| Alternate Power Products Asia | * |