| Acronym | Meaning |
| DR | Discrepancy Report |
| ELI | Environmental Law Institute |
| IRE | Institute Of Radio Engineers |
| DM | Data Management |
| TUV | Tropospheric Ultraviolet And Visible Radiation Model |
| ISO | International Standards Organization |
| MFEM | Magnetic Field Explorer Mission |
| S&R | Search And Rescue |
| NNMI | Nonlinear Normal Mode Initialization Software |
| MACRAT | Middle-Atmosphere Chemistry |