| Abbreviation | Definition |
|---|---|
| ECP | Effective Core Potential |
| ECP | Electromagnetic Compatibility Program |
| ECS | Eddy Covariance System |
| ECT | Edge Crush Testing |
| ED | Electron Diffraction |
| ED | Element Distinctness |
| ED | Expanded Discrimination |
| EDAX | Energy Dispersive Analysis of X-rays |
| EDF | Electrostatic Discharge Flooring |
| EDF | Enhanced Depth of Field |
| EDM | Electric Dipole Moment |
| EDN | Event Detection and Notification |
| EDR | Equivalant Direct Radiation |
| EDS | Electrodynamic Suspension |
| EDS | energy dispersive spectroscopy |
| EDT | Equivalent Difference Transmission |
| EDXRF | Energy Dispersive X-Ray Fluorescence |
| EEL | Enhanced Extended Loop |
| EEMW | Emission of Electromagnetic Wavw |
| EEPROM | Electrically Erasable Programmable Read Only Memory |