| Abbreviation | Definition |
|---|---|
| RF | Reference Factor |
| RF | Restriction Fragments |
| RFET | Remote Field Electromagnetic Technique |
| RFET | Remote Field Electromagnetic Testing |
| RFI | Relative Fluorescence Intensity |
| RFIM | Random Field Ising Magnet |
| RFLP | Restriction Fragment Length Position |
| RFP | Radiation Flux Parameter |
| RFP | Random Free Process |
| RFP | Relativistic Fokker Planck |
| RFS | Receptive Field Size |
| RFZ | Reflection Free Zone |
| RFZ | Reverse Flow Zone |
| RG | Radius of Gyration |
| RG | Rapid Gravity |
| RGM | Resonating Group Method |
| RGS | Reflection Grating Spectrometer |
| RH | Reference Height |
| RHED | Regions of High Electron Density |
| RHEED | reflection high-energy electron diffracton |