| Acronym | Meaning |
| PITG | Payload Integration Task Group |
| TR2 | Payload Furnished Mars Tape Recorder (2 Of 2) |
| PPC | PreProcessing Center |
| RM | Right Mid |
| TI | Training Integrator (Integration) |
| LPFTP | Low Pressure Fuel Turbopump |
| DECOM | Decommutate |
| SOW | Square Wave |
| FMEA | Failure Modes And Effects Analysis |
| DRIRU | Dry Rotor Inertial Reference Unit |