| Abbreviation | Definition |
|---|---|
| EER | Estimated Energy Requirement |
| EF | Easy Flow |
| EF | Electric Field |
| EF | Electromagnetic Field |
| EF | Extra Fine |
| EFC | Electrostatic Finishing Components |
| EFOMP | European Federation of Organisations in Medical Physics |
| EFOMP | European Federation of Organizations for Medical Physics |
| EFP | Effective Fringing Property |
| EFS | Enhanced Fujita [EF] scale (weather) |
| EFW | Evanescent Floquet Wave |
| EGAS | European Group for Atomic Spectroscopy |
| EGG | Energy Gradient Growth |
| EGO | Electromagnetic Guiding Omni |
| EGR | Energy Generation Region |
| EGS | Electron Gamma Shower |
| EHP | Environmental Health Physics |
| EHT | Extra High Tension |
| EI | Electromagnetic Spectrum |
| EIBT | Electrostatic Ion Beam Trap |