E2
| Acronym | Definition |
|---|---|
| E2 | Exceeding Expectations (various organizations) |
| E2 | Energy Efficiency |
| E2 | Everything 2 (collaborative writing community) |
| E2 | Estradiol |
| E2 | Energizer 2 (battery) |
| E2 | Electromagnetic Environment |
| E2 | Ecology and Economics Inc (Charlottesville, VA) |
| E2 | Airborne Early Warning Aircraft |
| E2 | Echelon 2 (US DoD) |
| E2 | Elimination Second Order (organic chemistry) |
| E2 | Exponential Elevation |
| E2 | Envelope Region 2 |