sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Coastal and Ocean Resource | **** |
| Canadian Orthopaedic Research Society | **** |
| Canadian Operations Research Society | *** |
| Continuous Operating Reference Station | *** |
| Continuously Operating Reference System | *** |
| Centralised Online Registration System | *** |
| Concept to Other States | *** |
| Committee on Resource Sharing | ** |
| Continuously Operated Reference Stations | ** |
| Child Outcomes Research Support | ** |
| Continually Operating Reference Stations | ** |
| Central Ontario Racing Series | ** |
| Carolina Office of Research and Statistics | ** |
| Continuous Operating Reference Stations | * |
| Continuously Operated Reference Station | * |
| Comparative Occurrence Reporting Service | * |
| Copyright Online Royalty Services | * |
| Customer Outage Reporting System | * |
| Confidential Observations of Rail Safety | * |
| Coordination and Review Section | * |
| Catalytic Oxygen Removal System | * |
| Continuous Oxide Reduction System | * |
| Continuously Operations Reference Stations | * |
| Country Oriented Recipe Site | * |