sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Portland Opera to Go | *** |
| Paediatric Oncology Group of Ontario | *** |
| Prescription of Gain/Output | ** |
| Partnership for the Observation of Global Oceans | ** |
| Partnership for Observations of the Global Ocean | ** |
| Pennzoil Offshore Gas Operators | ** |
| Prescription of Gain and Output | ** |
| Partnership for the Observation of the Global | ** |
| Partnership for the Observation of the Global Oceans | ** |
| Parents of Gifted Offspring | ** |
| Partnership for Observing the Global Oceans | ** |
| Perspectives Opportunities Guidance and Open | ** |
| Privately Owned Government Operated | * |
| Pinhook Osceola Greater Okefenokee | * |
| Production of Oil and Gas in Ohio | * |
| Polar Orbiting Geophysical Observatories | * |