sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Fiscal Intermediary Shared System | *** |
| For Integrated Sensor Systems | *** |
| Federation of Inline Speed Skating | *** |
| FISHERIES INFORMATION SUMMARY SYSTEM | *** |
| Foundation for International Studies on Social | *** |
| Firearm Injury Surveillance System | *** |
| Federation of Inline Speedskating | *** |
| Florida Invitational Step Show | *** |
| Food Industry Sustainability Strategy | *** |
| Financial Institution Software and Services | ** |
| Fish Information Summary System | ** |
| Financial Investigation Support System | ** |
| Foundation for International Strategic Studies | ** |
| Free Is the Speech of Someone | ** |
| Freshwater Invertebrate Survey of Suffolk | ** |
| Flight Information Sound System | ** |
| Federazione Italiana Sessuologia Scientifica | ** |
| Fisheries Information Summary Systems | ** |
| Fencing Industry Skills Scheme | ** |
| Federation of Inline Speed Skaters | ** |
| First International Science Study | * |
| Field Identifies the Standard | * |
| Foundation for International Studies of Social | * |
| Fuji Ice Skating School | * |
| Fabbrica Italiana Serrande Sicurezza | * |
| Family Intensive Support Service | * |
| Firearm Injury Surveillance Study | * |
| Foreign Intelligence Security Service | * |
| Federation Internationale des Societes Scientifiques | * |
| Foreign Intelligence Security Services | * |
| Full Integrated Service Support | * |
| Federation International de Societes Scientifiques | * |
| Fisons Instruments Surface Science | * |
| Fraunhofer Institut fur Software und Systemtechnik | * |