| Acronym | Meaning |
| DCC | Display COMPuter Control Unit |
| DP&SS | Data Processing And Software Subsystem |
| RF-TK | Radio Frequency Tracking |
| SP&S | Special Processes And Sequencing |
| FOD | Flight Operations Directorate (JSC) |
| PTCS | Propellant Tanking Computer System |
| MTP | Manufacturing Technical Procedure |
| NRZ | Non-Return-to-Zero |
| UDOP | Ultrahigh Doppler |
| LCG | Liquid Cooled Garment |