sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Global Commission on Ophthalmic Standards | *** |
| Gene Chip Operating System | *** |
| Global Carbon Observing System | ** |
| Global Climate Observation Systems | ** |
| Global Change Observation System | ** |
| Global Change Observing Systems | ** |
| Gulf Coast Ozone Study | ** |
| Ground Computer Operating System | * |
| General Counsel for Ocean Services | * |
| General Causality Orientations Scale | * |
| General Comprehensive Operating Supervisor | * |
| General Computer Operational System | * |
| Gods Chosen Operating System | * |