| Abbreviation | Definition |
|---|---|
| FOC | Forward Of Center |
| FOC | Forward Only Conversion |
| FOE | Force Of Energy |
| FOPS | Fundamental Optical Processes in Semiconductors |
| FORATOM | FORum ATOMique Européen |
| FOSC | Frequency of Oscillator |
| FP | Focal Plane |
| fp | freezing point |
| FPD | Flame photometric detector |
| FPL | Fluroscent Pulse Light |
| FPL | Frequent Power Loss |
| FPO | Final Project Objectives |
| fps | foot-pound-second [cf. cgs and mks] |
| FPS | Forum on Physics and Society |
| FRAC | Fracture Research and Application Consortium |
| FRAM | Functional Resonance Accident Model |
| FRAP | FRibourg Atomic Physics |
| FRET | Fluorescence Resonance Energy Transfer |
| FRIB | Facility for Rare Isotope Beams |
| FRSE | Freundeskreis Rhein Sieg Eisenbahn |