| Acronym | Meaning |
| EH/M | Extension Hose/Moi!thpiece |
| DETN | Detection |
| DRD | DetailedRequirementsDocument |
| PCN | Program Control Number |
| VTP | Vehicle Test Plan |
| U | Underfloor |
| TPM2 | Terminal Phase Midcourse #2 |
| RTCC | Real-Time Computer Center (NASA) |
| TRI | Payload Furnished Mars Tape Recorder (1 Of 2) |
| PPR | Payload Preparation Room |