sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Aesthetic Plastic Surgery Institute | **** |
| Alienation of Personal Services Income | **** |
| Agreement on Preshipment Inspection | **** |
| Anti Poverty and Social Inclusion | *** |
| Asia Pacific Studies Institute | *** |
| Advanced Placement Summer Institute | *** |
| Advanced Power Systems International | *** |
| Asian Pacific Studies Institute | *** |
| Action Plan for School Improvement | *** |
| Australian Professional Snowsport Instructors | *** |
| Aesthetic Plastic Surgery International | *** |
| Association of Professional Shooting Instructors | *** |
| Admission Physiologic Stability Index | ** |
| Adolescent Psychosocial Seizure Inventory | ** |
| atmospheric pressure spray ionisation | ** |
| Advanced Placement Summer Institutes | ** |
| Advanced Pilot System Interface | ** |
| Adult Protective Services Inc | ** |
| Austin Plastic Surgery Institute | ** |
| Advocacy Protective Services Inc | ** |
| Association of Professional Satellite Installers | ** |
| Advanced Power Solutions Inc | ** |
| Aker Philadelphia Shipyard Inc | ** |
| Aero Propulsion Support Inc | ** |
| Analytical Planning Services Inc | ** |
| Asia Pacific Satellite Industries | ** |
| Average Pairwise Sequence Identity | ** |
| Air Purification Specialists Inc | ** |
| Advanced Pilot Systems Interface | ** |
| Australian Professional Ski Instructors | ** |
| Academy of Plant Sciences | ** |
| Alternate Power Systems Inc | ** |
| Assured Product and Support Information | ** |
| Advance Placement Summer Institute | ** |
| Altek Power Systems Inc | ** |
| Asian and Pacific Studies Institute | ** |
| Advantage Professional Services Inc | ** |
| Atlantic Pharmaceutical Services Inc | ** |
| Aviation Professionals Sharing Information | ** |
| Asia Pacific Security Institute | ** |
| auto parts specialist inc | ** |
| Alliance to Promote Software Innovation | * |
| Asociacion Prestadores Servicios Informacion | * |
| Australian Playground Safety Institute | * |
| Adolescent Problem Severity Index | * |
| Advocacy and Protection Services Inc | * |
| Advocacy and Protective Services Inc | * |
| Aircraft Performance and Structures Investigation | * |
| Accurate Payroll Systems Inc | * |
| Applied Process Solutions Inc | * |
| Asia Pacific Symposium on Instrumentation | * |
| African Private Schools Investment | * |
| Aircraft Propulsion System Integration | * |
| American Periodical Series I | * |
| Argos Productivity Solutions Inc | * |
| Atlantic Pharmaceutical Services Incorporated | * |
| Advanced Planning and Scheduling Initiative | * |
| Aerospace Propulsion Subsystem Integration | * |
| Alpac Pulp Sales Inc | * |
| AIR POLLUTION STANDARDS INDEX | * |
| Advanced Position Systems Inc | * |
| Animal and Plant Scale Insects | * |