| Abbreviation | Definition |
|---|---|
| EPICS | Experimental Physics and Industrial Controls Systems |
| EPICS | Experimental Physics Instrumentation And Control System |
| EPR | Einstein, Podonsky, Rosen |
| EPS | European Physical Society |
| EPT | Electromagnetic Propagation Tool |
| EPT | Exchange Perturbation Theory |
| EPV | Exclusion Principle Violating |
| EQE | external quantum efficiency |
| EQP | Exploring Quantum Physics |
| ER | Elastic Recoil |
| ERAMS | Environmental Radiation Ambient Monitoring System |
| ERI | Electron Repulsion Integral |
| ERI | Extended Range Imaging |
| ERP | Event Related Potentials |
| ES | Elementary Scenario |
| ES | Elementary Stream |
| ES | Emission Source; Emission security |
| ES | Event Set |
| ES | Exploratory Space |
| ESA | Emission Spectral Analysis |