| Acronym | Meaning |
| MAC | Multiple Access Computer |
| AB | Architect Building |
| NASCOM II | Upgraded Version Of NASA Communications Network |
| SSL | Space Sciences Laboratory |
| ETC | Estimate Time To Complete |
| AP | Administrative Procedure |
| ATSR | Along Track Scanning Radiometer |
| APL | Average Power Laser |
| SIGMET | Significant Meteorological Information |
| EMA | Electrodynamics Of The Middle Atmosphere |