sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Project of State Significance | **** |
| Point of Sale System | *** |
| Plan of Study for Scoping | *** |
| Purchase of Service System | ** |
| population optimal sampling schedule | ** |
| Point of Sale Subsystem | ** |
| Persistent Object Storage System | ** |
| partial duct obstruction and secretin stimulation | ** |
| partial duct obstruction with secretin stimulation | ** |
| Palomar Optical Sky Survey | ** |
| Police Officer Scheduling System | ** |
| Preparing Outstanding Scholars for Special | ** |
| Pendayagunaan Open Source Software | ** |
| Point of Sales Solutions | ** |
| Plant Occurrence and Status Scheme | ** |
| Partner Organization Satisfaction Survey | ** |
| PHP Open Source SMTP | * |
| Palomar Observatory Sky Surveys | * |
| Peoples Orientated Sustainable Strategy | * |
| Palomar Obervatory Sky Survey | * |
| Plant Occurrence and Status System | * |
| Peacekeeping Operations Support Services | * |
| parallel operational support system | * |
| Parsha Online Sefarim Store | * |
| Physical Oceanography Small Scal | * |
| Program Operations Support Staff | * |
| Provisions for Off Site Storage | * |
| Public Order and Safety Services | * |