| Abbreviation | Definition |
|---|---|
| EJN | EJectioN |
| EKG | ElectrocardioGram (Record) |
| EKG | ElectrocardioGraph (Instrument) |
| EL | Elastic Limit |
| EL | Electro-Luminescence |
| EL | ELevate |
| EL | Elevation Angle |
| EL | Equipment List |
| ELACS | Extended Life Attitude Control System |
| ELB | ELBow |
| ELD | Equivalent Lens Diameter |
| ELDISC | ELectrical DISConnect |
| ELDV | Electrically Operated Depressurization Valve |
| ELEC | ELECtric |
| ELEC | ELECtronic |
| ELEC | Electronics |
| ELECT | ELECTrical |
| ELECTR | ELECTRonics |
| ELECTRA | Enhanced Light Efficiency Cophasing Telescope Resolution Actuator |
| ELEV | ELEVon |