sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Canadian Food Inspection System | *** |
| Center for International Studies | *** |
| Conference on Forensic Inference and Statistics | *** |
| Counter Fraud Investigation Service | *** |
| Crown Fire Initiation and Spread | *** |
| chain-folding initiation sites | ** |
| Chinese Functional Independence Scale | ** |
| Center for Indigenous Sovereignty | ** |
| Centre for International Studies | ** |
| Centre for Indigenous Sovereignty | ** |
| Canadian Foreign Intelligence Service | ** |
| Centre for Functional Imaging Studies | ** |
| Canadian Forces Income Support | ** |
| Citizens for the Integrity of Science | ** |
| Canadian Firearms Information System | ** |
| Counter Fraud Intelligence Service | ** |
| College Financial Information System | ** |
| Canadian Food Inspection Service | ** |
| Christian Friends of International Students | * |
| Community Flood Information System | * |
| Caribbean Forum on the Information Society | * |
| Center for Federal Investigative Services | * |
| Center for Information Systems | * |
| Chin Forum Information Service | * |
| Conflict Free Instrument Schedule | * |
| Clean Fast and Informative Site | * |