| Acronym | Meaning |
| IOCU | Input/Output Control Unit |
| NORMAL | LoadNormal Load Factor (g) |
| HTR | Heater |
| DU | Display Unit |
| PCCM | Program Change ControlManagement |
| FES | Flash Evaporator System |
| PRESS | Pressurant |
| SCIM | Standard Cubic Inches Per Minute |
| KSSS | KSC Station Set Specification |
| JAEIC | Joint Atomic Energy Intelligence Committee |