| Acronym | Meaning |
| APA | American Planning Association |
| TES | Transequatorial Scatter |
| IARP | International Atmospheric Research Program |
| ACDA | Arms Control And Disarmament Agency |
| ACR | Active Cavity Radiometer |
| M&O | Maintenance And Operations |
| AFEL | Advanced Free-electron Laser |
| GCMC | Global Climate Modeling Group |
| SLAP | Space Link Access Protocol |
| RUC | Rapid Update Cycle |