| Acronym | Meaning |
| TMBU | Table Maintenance Block Update |
| PLSS | Portable Life Support Subsystem |
| BRM | Biological Research Module |
| OLDB | On-Line Data Bank |
| GSO | Ground Systems Operations |
| CONFIG | Configuration |
| HSI | Horizontal Situation Indicator |
| ILS | IntegratedLogistics System |
| TCR | Test Compare Results |
| EV | Expendable Vehicles |