| Acronym | Meaning |
| K-SM | KSC Shuttle Management Document |
| SC | Signal Conditioner (S/C Preferred) |
| CSAS | ComPuterized Status Accounting System |
| PASS | Primary Avionics Software System |
| BDC | Bit Error Rate |
| GDSSR | GDSD Staff Support Room |
| SUMC | Space Ultrareliable Modular Computer |
| MEC | Main Engine Controller |
| CIG | Communications And Interface Group |
| DEF | Definition |