| Abbreviation | Definition |
|---|---|
| FLEC | Fort Loudoun Electric Cooperative |
| FLEEN | Fairly Large Electronic Entertainment Network |
| FLIR | Forward Looking InfraRed |
| FLO | Flat Line Oscillation |
| FLOODS | FLorida Object-Oriented Device Simulator |
| FLOOPS | FLorida Object-Oriented Process Simulator |
| FLOPC | FLoating point Operations needed Per Cycle |
| FLOTOX | FLOating gate Tunnel OXide |
| FLP | Fermi Level Pinning |
| FLRT | Factory Layout/Re-layout Tool |
| FLS | Feedback Locating System |
| FM | Finite Memory |
| FM | Freak Magnet |
| FM | Frequency Matching |
| FMAS | FMAS Flash Module Array System |
| FMEA | Failure Modes and Effects Analysis |
| FMI | Frequency Modulation Interference |
| FMKM | Failure Mode Knowledge Matrix (electronics manufacturing) |
| FMLB | First Mate Last Break |
| FMMC | Factory Material Movement Component |