sort by Rank | Alpha
| Possible Meanings | Rank |
| Against Primate Experiments | **** |
| Assessment Planning and Evaluation | **** |
| Action Performance Ensemble | **** |
| Administration of Pharmaceuticals | **** |
| Actionscript Physics Engine | **** |
| ANSI POSIX Environment | **** |
| agricultural process engineering | *** |
| athletic promotional events | *** |
| Adaptive Physical Education | *** |
| Animal Plant and Environmental | *** |
| At the Proposed | *** |
| Artists Project Earth | *** |
| Animal Protection Education | *** |
| Area of Potential Effects | *** |
| Animal Property Editor | *** |
| Avast Professional Edition | *** |
| Auto Parts Express | *** |
| Apurinic Apyrimidinic Endonuclease | *** |
| Airborne Polar Experiment | *** |
| Auroral Photography Experiment | *** |
| Asia Pacific Economic | *** |
| Association for the Protection of the Elderly | *** |
| Advances in Production Engineering | *** |
| A. Pierce Elementary (Laredo, TX) | *** |
| Alma Pierce Elementary (Laredo, TX) | *** |
| Application Program Evaluation | *** |
| Association for Protection of the Elderly | *** |
| Academic Publishing in Europe | *** |
| Aquaculture Pacific Exchange | *** |
| Absolute Power Exchange | *** |
| Art Poetry and Essay | *** |
| Asociación Primatológica Española | *** |
| Advanced Parts Exchange | *** |
| Applied Power Electronic | *** |
| Array Processor Experiment | *** |
| An Alternative Physical Education | *** |
| Airborne Platform for Earth | *** |
| Adaptable Persistence Engine | *** |
| Accessories of Pet Express | *** |
| Active Prolonged Engagement | *** |
| American Performance Engineering | *** |
| Advanced Product Enterprises | *** |
| Architectural Practice Examination | *** |
| A Private Enterprise | *** |
| Advanced Packet Exchange | *** |
| Athletic Performance Enhancement | *** |
| Auckland Peering Exchange | *** |
| Asian Pacific Economic | *** |
| Aza Peptide Epoxide | *** |
| Active Phasing Experiment | *** |
| Atari Peripheral Emulator | *** |
| Animals People and the Environment | *** |
| Acute Pulmonary Edema | *** |
| Average Percentage Error | *** |
| Alfa Parts Exchange | *** |
| Autothority Performance Engineering | *** |
| Automatic Positioning Equipment | *** |
| Agencja Poszanowania Energii | *** |
| Advanced Practice Experience | ** |
| 15N]-atom percent excess | ** |
| abdomino-perineal excision | ** |
| absolute prediction error | ** |
| acute pleural empyema | ** |
| acute pulmonary exacerbation | ** |
| adaptive probit estimation | ** |
| air pressure equilibration | ** |
| alkyl phenol ethoxylates | ** |
| amylase-pullulanase enzyme | ** |
| Analytical particle electrophoresis | ** |
| and pleural effusion | ** |
| Andrographis paniculata extract | ** |
| animal pole ectoderm | ** |
| apical plate excrescences | ** |
| aqueous propolis extract | ** |
| arecaidine proparagyl ester | ** |
| arecaidine propargly ester | ** |
| arecaidine propargyl ester | ** |
| Arrested Primer Extension | ** |
| asymptomatic pleural effusion | ** |
| atom percent excess | ** |
| atom percentage excess | ** |
| atoms percent excess | ** |
| autologous plasmin enzyme | ** |
| average parameter estimates | ** |
| Agentura Pro Ekologii | ** |
| Association Petite Enfance | ** |
| Areas of Potential Effects | ** |
| Annualized Premium Equivalent | ** |
| Association of Publishers | ** |
| acute cardiogenic pulmonary edema | ** |
| acute, massive pulmonary embolism | ** |
| apurinic/apyrimidinic endonuclease | ** |
| apurinic/apyrimidinic endonucleases | ** |
| asthma of physical effort | ** |
| Australian pine pollen extract | ** |
| Absolute Percent Error | ** |
| Association of Planning Engineers | ** |
| Abgesetzte Periphere Einheit | ** |
| Average Peak Excursion | ** |
| Association of Petroleum Engineers | ** |
| Automated Performance Enhancement | ** |
| apurinic/apyrimidinic endonuclease | ** |
| Automatic Parallelization Environment | ** |
| Automotive Power Electronics | ** |
| Against Port Expansion | ** |
| Amsterdam Power Exchange | ** |
| Alat Permainan Edukatif | ** |
| Andy Partridge Experiments | ** |
| Address Parity Enable | ** |
| 2-[(p-amino)phenethylamino]adenosine | ** |
| acute pulmonary oedema | ** |
| acute pulmonary thromboembolism | ** |
| American Puritan Ethic | ** |
| Andrographis paniculata leaves | ** |
| All Path Explorer | ** |
| Abgesetzten Peripheren Einheiten | ** |
| Abstinence Protects Everyone | ** |
| Abbreviated Plain English | ** |
| Anterior Pituitary Extract | ** |
| After Prom Event | ** |
| Atom Percent Enrichment | ** |
| Ace Political Expert | ** |
| anti-PE antibodies | ** |
| anti-phosphatidylethanolamine antibodies | ** |
| Arts Participation for Employability | ** |
| Alliance for Planet Earth | ** |
| Accumulated Photon Echo | ** |
| Approche Par Etat | ** |
| Aligned Pair Exclusion | ** |
| And Advocates Partnership for Education | ** |
| American Parking Equipment | ** |
| Apple Peering Exchange | ** |
| Attempto Parsing Engine | ** |
| Administracion Publica del Estado | ** |
| All Paths Explorer | ** |
| Active Playground Equipment | ** |
| Absolute Pointing Error | ** |
| American Precision Electronics | ** |
| Analysis of Phylogenetics and Evolution | ** |
| Advanced Photoemission Experiment | ** |
| Automated Parking Expert | ** |
| Analog Processing Element | ** |
| Academic Partnership for Excellence | ** |
| Akademie Percussion Ensemble | ** |
| Associazione Produttori Esecutivi | ** |
| Atlanta Paragliding Enterprises | ** |
| Accounts Payable Entry | ** |
| Adult Presentence Evaluation | ** |
| Association for Protection of the Environment | ** |
| Autocovariance Preserving Estimator | ** |
| Assistant for Philological Explorations | ** |
| Adaptive Predictive Encoding | ** |
| Aesthetically Pleasing Electronics | ** |
| Armor Piercing Explosive | ** |
| Assemblee Parlementaire Europeenne | ** |
| Achieving Personal Effectiveness | ** |
| ALL People Equall | ** |
| Archives Portfolios Environments | ** |
| Associazione Pavese Esperanto | ** |
| Acetone Powder Extract | * |
| Agente Polivalente Elementar | * |
| Aqua Planet Experiment | * |
| Association for Philosophy of Education | * |
| Asymmetrical Plasma Electrolysis | * |
| Alkyl Phenol Etoxylates | * |
| Apple Pie Enterprise | * |
| Associazione Poschiavina Esploratori | * |
| Automatic Photomapping Equipment | * |
| Ad on PVPOnline | * |
| Appalachian Paddling Enthusiasts | * |
| Apparatus Personnel and Equipment | * |
| Atom Percent Enrichments | * |
| Awareness and Preparedness for Emergencies | * |
| Active Program Element | * |
| Activities Projects Events | * |
| Adventurous Play Experience | * |
| AG Paediatrische Endokrinologie | * |
| Alpha Proton Electron | * |
| Analyse Prototyp Entwicklung | * |
| Animal Projects Editor | * |
| Armour Piercing Explosive | * |
| Atmospheric Pilot Experiment | * |
| Agence Pour l'Energie | * |
| Advance Purchase Excursion | * |
| Air Pollution Emissions notice | * |
| Application Protocols Entities | * |
| Army Peculiar Equipment | * |
| Academic Period Enrollment | * |
| Agricultural Production Economics | * |
| Arctic Polynya Experiment | * |
| Acute bovine Pulmonary Emphysema | * |
| Advanced Plastic Encapsulation | * |
| Adverse Political Event | * |
| Alpha Proton and Electron | * |
| Aurora Photography Enhance | * |
| Accountability as Public Engagement | * |
| Acrey Photographic Expeditions | * |
| Acreys Photographic Expeditions | * |
| Action Power Equipment | * |
| Advertising and Promotion Exchange | * |
| Air Port of Embarkation | * |
| Alliance for Photonics Education | * |
| Applications Program Environment | * |
| Army Program of Excellence | * |
| Associated Processing Equipment | * |
| Association de Parrainage pour l'Education | * |
| Association of Professional Engineers | * |
| Astro Planetary Exploration | * |
| Athletics Physical Eductions | * |
| Atlas Pellizzari Electric | * |
| Avenue Park Entertainment | * |