sort by Rank | Alpha
| Possible Meanings | Rank |
| And the Portland Cement Association | **** |
| Air Pollution Control Administration | *** |
| Alabama Pest Control Association | *** |
| Air Pollution Control Act | *** |
| Asia Pacific Communication Associates | *** |
| All Pakistan Contractors Association | *** |
| American Primate Conservation Alliance | *** |
| Anti Parietal Cell Antibody | *** |
| anti-paternal cytotoxic antibodies | ** |
| anti-paternal cytotoxic antibody | ** |
| anti-Purkinje cell antibodies | ** |
| anti-Purkinje cell antibody | ** |
| Adaptive Piecewise Constant Approximation | ** |
| Alberta Painting Contractors Association | ** |
| anti-parietal-cell gastric antibodies | ** |
| anti-paternal complement dependent antibody | ** |
| anti-paternal complement-dependent antibody | ** |
| hereditary paroxysmal cerebellar ataxia | ** |
| All Pakistan Clerks Association | ** |
| australian payment clearing association | ** |
| Arthur Pieman Conservation Area | ** |
| African Palliative Care Association | ** |
| Australian Piedmontese Cattle Association | ** |
| Ansley Park Civic Association | ** |
| Australian Payments and Clearing Association | ** |
| Anti Purkinje Cell Antibody | ** |
| Alabama Power Cooperative Approach | ** |
| Automated Packaging Component Analyzer | ** |
| Advance Payments for Crops Act | ** |
| Anti Parietal Cell Antibodies | ** |
| Adaptive Principal Component Analysis | ** |
| Area Professional Captains Association | ** |
| Ashford Park Civic Association | ** |
| American Portland Cement Association | ** |
| amidinopiperidine-4-carboxylic acid | ** |
| and professional cartoonists association | ** |
| antipaternal complement-dependent antibodies | ** |
| antipaternal complement-dependent antibody | ** |
| Alaska Pro Choice Alliance | ** |
| All Pakistan Crescentarian Association | ** |
| American Planning and Civic Association | ** |
| Advancement and Promotion of Charitable Activities | ** |
| All Pakistan Clerical Association | ** |
| Australian Port Charges Additional | ** |
| Andhra Pradesh Chess Association | ** |
| Alternative Pathway of Complement Activation | ** |
| Absolute Principal Component Analysis | ** |
| Asian Pacific Craniofacial Association | ** |
| A Prestigious Critics Association | ** |
| Ashforth Paradigm Capital Advisors | ** |
| Athlone Park Civic Association | ** |
| American Personal Chefs Association | ** |
| Asia Pacific Communication Association | ** |
| Asia Pacific Communications Associates | ** |
| Association for Promotion of Campus Activities | ** |
| Alabama Partners for Clean Air | * |
| Australian Port Charge Additional | * |
| Africa Palliative Care Association | * |
| American Pipeline Contractors Association | * |
| Association for the Prevention of Child Abuse | * |
| Asia Pacific CEO Association | * |
| Association for Programming Campus Activities | * |
| Association of Palliative Care | * |
| Association of Purdue Chinese Alumni | * |
| Anthropogenic Precursor Culpability Assessment | * |
| Academy of Pharmacy College Academicians | * |
| Adaptive Principle Components Analysis | * |
| Aft Power Controller Assembly | * |
| Alliance for Police and Community Accountability | * |
| Airborne Platform Coverage Area | * |