sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Chinese National Oil Company | *** |
| Commission on the Nomenclature of Organic Chemistry | *** |
| Canadian Network for Observational Cosmology | *** |
| Curragh Naas Orienteering Club | ** |
| Chicago Norton Owners Club | ** |
| Consolidated National Operations Center | ** |
| Congresso Nazionale Oggetti Compatti | ** |
| China National Offshore Company | * |
| Computer and Network Operations Core | * |