| Abbreviation | Definition |
|---|---|
| EA | Electronic Assembly |
| EA | Elevation Angle |
| EAA | Earth Attitude Angle |
| EAC | Energy Absorbing Capacity |
| EAC | Estimate At Completion |
| EAC | Experiment Apparatus Container |
| EAD | Electrically Alterable Device |
| EAD | Energy Aided Docking |
| EADI | Electronic Attitude Director Indicator |
| EADS | Engineering Analysis and Data System |
| EADS | European Aeronautic Defence And Space |
| EAF | Experimenter's Analysis Facility |
| EAFB | Eglin Air Force Base |
| EAFB | Ellington Air Force Base |
| EAM | Electrical Accounting Machine |
| EAM | External Antenna Module |
| EAP | Educator Astronaut Program |
| EAP | Emergency Action Plan |
| EAP | External Auxiliary Power |
| EAPU | External Auxiliary Power Unit |