sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Online Personal Union Scheduling | ***** |
| Open Platform for Unregistered Securities | **** |
| Optimized Power Usage Solution | *** |
| Open Public Urban Spaces | *** |
| Open Platform for Urban Simulation | *** |
| Online Positioning User Service | *** |
| Olympic Properties of the United States | *** |
| Open Parallel Unisys Server | *** |
| Oxford Programme for Undergraduate Studies | *** |
| Okinawa Personal UNIX Society | *** |
| Offender Population Unified System | ** |
| Optimising Public Understanding of Science | ** |
| Online Patches and Updates for Security | ** |
| Overlay Peer Utility Service | ** |
| Online Payroll Update System | ** |
| Operational Pipeline Unified Systems | ** |
| Options for the Productive Use of Salinity | ** |
| Online Placement University System | ** |
| Offender Population Urinalysis Screening | ** |
| Orthotics and Prosthetics Users Survey | ** |
| Online Processing User Service | ** |
| Online Pathway to University Students | ** |
| Organisation for Promoting Understanding in Society | ** |
| Online Public Update for Schools | ** |
| Older People Up to Something | ** |
| Online Policy Underwriting System | ** |
| Open Platform for Unlimited Signification | ** |
| Operator Performance Under Stress | ** |
| Oxford Professional Updating System | ** |
| Online Publications Utility System | * |
| Options for the Productive Use of Saline | * |
| Oklahoma Polytheistic Unification Society | * |
| Open Platform for Urban Sustainability | * |
| Optical Prism Uniformity System | * |
| Office of Public Understanding of Science | * |
| ORCA Planning and Utility System | * |
| Organization for Promoting Understanding of Society | * |
| Online Pathway for University Students | * |
| Online Policy Update System | * |
| Opportunity Programs and Undergraduate Services | * |
| Orchestra Players United of Shreeveport | * |
| Obvious Password Utility System | * |
| Open Process Control Unified Systems | * |
| Open Program Unified Study | * |
| On-line Production control in the food industry Using fluorescence Spectroscopy | * |
| Orchestra Players United of Shreveport | * |