sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Oxford Guide to Style | **** |
| Ohio Genealogy Society | **** |
| Oxford Graduate School | **** |
| Oil Grit Separators | **** |
| Osservatorio Geofisico Sperimentale | **** |
| Oklahoma Geological Survey | **** |
| Of Government Scholarships | **** |
| Oil and Gas Studies | **** |
| Opening General Session | **** |
| Out Grower Scheme | **** |
| Oregon Genealogical Society | *** |
| Ontario Geological Survey | *** |
| Objective Grading System | *** |
| Ontario Graduate Scholarships | *** |
| Ozarks Genealogical Society | *** |
| Office of the Government Statistician | *** |
| Ohio Geological Society | *** |
| Office of the General Services | *** |
| Orange Grove School | *** |
| Ontario Genealogy Society | *** |
| Opération Grand Site | *** |
| Of Graduate Schools | *** |
| Object Group Service | *** |
| Online Gaming Society | *** |
| Optometric Glaucoma Society | *** |
| Offices of Graduate Studies | *** |
| Online Game Spot | *** |
| Order of the Golden Staff | *** |
| Ongevalsbestrijding Gevaarlijke Stoffen | *** |
| Orthologous Gene Sets | *** |
| Ottumwa Generating Station | *** |
| Olive Grove School | *** |
| Olympia Genealogical Society | *** |
| Ongeval Gevaarlijke Stoffen | *** |
| Of Geological Survey | *** |
| Optical Ground Stations | *** |
| Optometry Giving Sight | *** |
| Ohio Gasket Shim | *** |
| Ohio Geological Survey | *** |
| Office of Gas Safety | *** |
| Office of Grant Support | *** |
| Oklahoma Genealogical Society | *** |
| Oregon Growers Shippers | *** |
| Officier Gevaarlijke Stoffen | *** |
| Optical Ground Station | *** |
| OneStop Gaming Servers | *** |
| Objective Grating Spectrometer | *** |
| Oxford German Studies | ** |
| Ongevallen Gevaarlijke Stoffen | ** |
| OH Genealogy Society | ** |
| Officer General Specifications | ** |
| On the Ontario Graduate Scholarship | ** |
| Office of the General Secretary | ** |
| Osservatorio Geofisisco Sperimentale | ** |
| Outer Galaxy Survey | ** |
| Official Gene Set | ** |
| Original Game Soundtrack | ** |
| Office of Geological Survey | ** |
| office general services | ** |
| Oligobirsk Gazprom Stars | ** |
| Operation Ground Segment | ** |
| Oxygen Generating Subsystem | ** |
| Ordered Geometrical Sets | ** |
| Ontario Geological Society | ** |
| Optimal Gain Switching | ** |
| Oak Grove School | ** |
| Oxford Glyco Sciences | ** |
| Oklahoma Geological Society | ** |
| Ontario Graduate Studies | ** |
| Ontario Government Scholarship | ** |
| Oxygen Generator System | ** |
| Office for General Services | ** |
| Open Groupware Standards | ** |
| Oligodendrocyte Growth Supplement | ** |
| On to Graduate School | ** |
| Open Grove Society | ** |
| Order of the Golden Shillelagh | ** |
| Overall Ground Segment | ** |
| Office of Graduate School | * |
| Orange Genealogical Society | * |
| Operational Ground Segment | * |
| Ohio Geriatrics Society | * |
| Oregon Geriatrics Society | * |
| Overseas Graduate Scholarship | * |
| Of Graduate Search | * |
| Office of Grant Services | * |
| OST Genso Suikoden | * |
| Oxygen Generating System | * |
| Oxygen Generation Subsystem | * |
| Objective Grating Spectrometers | * |
| One Good Solution | * |
| Other Government Sites | * |
| Oil and Gas Section | * |
| Oregon Geological Survey | * |
| Original Ground Surface | * |
| Oil and Gas Sites | * |
| Oak Grove Shaft | * |
| Office Gossip Song | * |
| Official Guide to Salisbury | * |
| Oil and Gas Sections | * |
| Oil and Gas Software | * |
| Oil and Gas Staff | * |
| Online Garage Sale | * |
| Operator to General Support (Maintenance) | * |
| Other Geochemistry Sites | * |
| Outline of Geological Survey | * |
| Owl Giant Scops | * |