| Acronym | Meaning |
| MAGSAT | Magnetometer Satellite |
| LPTTL | Low Power Transistor-Transistor Logic |
| HAL/S | Computer |
| EL | Electroluminescent |
| EBO | Eyeballs Out (-GX) |
| SDRB | SUPPlier Documentation Review Board |
| BBC | Before Business Clearance |
| MDCA | Main Distribution Control Assembly |
| SEICO | SuPPort EquiPment Installation And Checkout |
| SIS | SiMUlator Interface SYstem (SubsYstem) |