| Acronym | Meaning |
| ORP | OFS Retransmission Processor |
| VGOR | Vehicle Ground Operation Requirements |
| MMPSE | Multiuse Mission Payload Support Equipment |
| SRSS | Shuttle Range Safety System |
| CRS | C02 Reduction Subsystem |
| PCTO | Payload Cost Tradeoff Optimization |
| GSS | Ground Support System |
| SPPP | Spacelab Payloads Processing Project |
| DA | Deployed Assembly |
| NTS | Near Term Schedule |