sort by Rank | Alpha
| Possible Meanings | Rank |
| Accreditation Program Overview | **** |
| Analytics and Performance | **** |
| Assistant Presiding Officer | **** |
| Asia Pacific Organization | **** |
| Addresses and Post Office | **** |
| affected property owner | **** |
| Arnhem Philharmonic Orchestra | **** |
| African Peoples Organization | **** |
| Airport Police Officer | **** |
| Addresses or P O | **** |
| Auto Parallelizing Option | **** |
| Advanced Planner Optimizer | **** |
| Available for PO | **** |
| Addressed to PO | **** |
| Academic Personnel Office | **** |
| Australian Policy Online | **** |
| Advanced Purchase Order | **** |
| Auckland Philharmonic Orchestra | *** |
| Aufstiegs Play Off | *** |
| Australian Passport Office | *** |
| All the Products | *** |
| Available to Promise | *** |
| Automatic Power Off | *** |
| Academic Program Officer | *** |
| American Pharmaceutical Outsourcing | *** |
| Asia the Pacific and Oceania | *** |
| Association of Post Office | *** |
| Amaterska Prohlidka Oblohy | *** |
| An Administrative Protective Order | *** |
| Asian Productivity Organisation | *** |
| Audio Processing Objects | *** |
| Access Points Overview | *** |
| Army Post Offices | *** |
| Administrative Protective Orders | *** |
| Advanced Projects Office | *** |
| Associate Professional Officer | *** |
| Analogue Productions Originals | *** |
| a perfect obsession | *** |
| african press organization | *** |
| Advance Planner and Optimizer | *** |
| Activity Professionals of Ontario | *** |
| Accueil Parrainage Outaouais | *** |
| Automotive Products Operations | *** |
| Absolutely Positioned Object | *** |
| Addresses and P O | *** |
| Agricultural Pesticides Ordinance | *** |
| Art Promotion Office | *** |
| At Alpha Phi Omega | *** |
| Australian Patent Office | *** |
| Assistant Professional Officer | *** |
| Associazione Pazienti Omeopatici | *** |
| A Performance Officer | *** |
| Arapahoe Philharmonic Orchestra | *** |
| All Properties Option | *** |
| Asia Pacific Operations | *** |
| Armia Podkarpacki Ots | *** |
| aceralia perfiles olaberria | *** |
| Australian Partner Organisations | *** |
| Accredited Professional Organization | *** |
| Association of Professional Observers | *** |
| Asia Productivity Organization | *** |
| Asia Pacific Office | *** |
| Andean Pact Organization | *** |
| Associazione Produttori Olivicoli | *** |
| Accreditation of Prior | ** |
| acquired pendular oscillation | ** |
| active patient orientation | ** |
| Adriamycin/prednisone/Oncovin | ** |
| Adverse Patient Occurrence | ** |
| Adverse Patient Occurrences | ** |
| adverse pregnancy outcomes | ** |
| ambient-pressure orthorhombic | ** |
| amebocyte-producing organ | ** |
| amoebocyte-producing organ | ** |
| antisense phosphorothioate oligonucleotides | ** |
| antisense phosphorothioate-oligodeoxynucleotides | ** |
| aortic perfusion only | ** |
| atmospheric pressure oscillations | ** |
| Audit Project Odense | ** |
| Annual Plan of Operations | ** |
| Average Passenger Occupancy | ** |
| American Post Office | ** |
| Area Personnel Officer | ** |
| Automatic Print Orientation | ** |
| Advanced Planning Overview | ** |
| alcohol-P-450 oxygenase | ** |
| AIDS Project of the Ozarks | ** |
| Addresses or to Puerto | ** |
| Analyse Psycho Organique | ** |
| Associate Programme Officer | ** |
| Announcement of Partnership Opportunity | ** |
| Alliance Participating Organizations | ** |
| Association of Philippine Orthodontists | ** |
| Agency Procurement Officer | ** |
| Agricultural Professional Organisations | ** |
| Airdrie Public Observatory | ** |
| Administrative Penalty Orders | ** |
| Ambiti Produttivi Omogenei | ** |
| Association of Professional Organizers | ** |
| Aircraft Protective Officers | ** |
| Athletic Petty Officer | ** |
| Audit Projekt Odense | ** |
| Absolute Price Oscillator | ** |
| Acute Pulmonary Oedema | ** |
| Action Plan Order | ** |
| Aquifer Protection Overlay | ** |
| Agency Purchasing Official | ** |
| Angami Public Organisation | ** |
| Applicable to P O | ** |
| A Personal Odyssey | ** |
| Advance Planning and Optimization | ** |
| Alianza Política Opositora | ** |
| Alliance Participating Organization | ** |
| Asian Production Organization | ** |
| Associate Professional Officers | ** |
| Areawide Planning Organizations | ** |
| Arrow Program Office | ** |
| Associated Professional Officer | ** |
| Access Protection Option | ** |
| Alianza Politica Opositora | ** |
| Asynchronous Partial Overlay | ** |
| Adenocarcinoma Pulmonar Ovino | ** |
| African People Organisation | ** |
| Alpha Phi Omege | ** |
| Asia Pacific and Oceania | ** |
| Assistant Project Officers | ** |
| Advanced Placement Option | ** |
| Aircraft Propulsion Operations | ** |
| Area Planning Organizations | ** |
| ASEAN Productivity Organisation | ** |
| Asian Professionals Organization | ** |
| Acquisition Program Office | ** |
| Area Post Office | ** |
| allous plin oswn | ** |
| Advanced Planning and Optimizer | * |
| Advanced Programming Option | * |
| Alaska Pipeline Office | * |
| Angami Public Organization | * |
| Administrative Professional Officer | * |
| Americana Pig Ornaments | * |
| Army Postal Office | * |
| Automated Purchase Order | * |
| Agriculture Productivity Office | * |
| Aircraft Project Office | * |
| Accessory Power Outlets | * |
| Aircraft Performance and Operations | * |
| Area Petroleum Office | * |
| Army Purchase Organization | * |
| Authorised Program Officers | * |
| ABAP Programming Oder | * |
| Acting Pilot Officer | * |
| Afloat Prepositioning Operations | * |
| Area Program Offices | * |
| Associazione Produttori Olive | * |
| Adaptive Performance Optimization | * |
| Australian Patents Office | * |
| Award Processing Operation | * |
| Areawide planning organization | * |
| Azanian Peoples Organisation | * |
| Adjoining Property Owner | * |
| Alfresco Patio Outlet | * |
| Appointed Post Office | * |
| Airway Passage Obstruction | * |
| Application Performance Optimizer | * |
| Abstract Plottable Objects | * |
| Abstracts in Press Online | * |
| Academic Programmes Offered | * |
| Adjoining Property Owners | * |
| Air Photos Online | * |
| Altenkirch Precision Outfitters | * |
| Amorous Platypus Online | * |
| Analyst Proponency Office | * |
| Anticipated Position Opening | * |
| Any Party Opposing | * |
| Archaeology Projects Online | * |
| Arizona Projects Office | * |
| ATTN APAJ-GH PO-RP | * |
| Auburn Plainsman Online | * |
| Automatic Page Optimization | * |