sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Females Investigating Sexual Terrain | *** |
| Fleet Initial Strike Team | *** |
| Fight Imperialism Stand Together | *** |
| Foundation for Information Security and Technology | *** |
| first international swedish tournament | *** |
| Fighters Initiative for Support and Training | *** |
| Fleet Imagery Support Terminal | *** |
| Florida Interpersonal Skills Training | ** |
| fluorescence in situ transcription | ** |
| Full Integral Simulation Test | ** |
| First Improvised Security Testing | ** |
| Flexible Item Selection Task | ** |
| Families in Search of Truth | ** |
| Festival Internacionalnog Studentskog Teatra | ** |
| Fight Israeli State Terrorism | ** |
| Females in Search of Trouble | ** |
| Forced Ignition and Spread Test | ** |
| First in Still There | ** |
| Flexible Internet Spatial Template | ** |
| Future Infantry System Technology | ** |
| Facilities Instructions Standards and Techniques | ** |
| Federazione Italiana Servizi Territoriali | ** |
| Females in Science and Technology | ** |
| Feminism in Science and Technology | ** |
| Fuel in Storage Tank | ** |
| Festival of International Student Theatre | ** |
| FCS Integrated Support Team | ** |
| Fund for the Improvement of Science Technology | ** |
| FMS Initial Support Tracker | * |
| Fingerprinting Insures Safe Tots | * |
| Free Individual Selfdefence Training | * |
| Flunarizine in Stroke Treatment | * |
| Foreign Intelligence and Security | * |
| Forensic Investigative Support Team | * |
| Federation of Independent Space Travelers | * |
| Fast Inverse Scattering Tool | * |
| Financial Information Software Technology | * |
| Fugitive Investigative Strike Teams | * |
| Final Integrated System Test | * |
| Flood Impact Support Tool | * |
| Functional In Service Training | * |
| Facility Instrument Science Team | * |
| Factory Integrated System Test | * |
| Friday Intellectual Social Tribe | * |
| Flood Impact Support Tools | * |
| FSO or a fire support team | * |