| Acronym | Meaning |
| GPC | General-purpose Computer |
| HA | Hazard Analysis |
| S/C | Stabilization And Control |
| MAPS | Measurement Of Air Pollution From Satellites |
| FACO | Factory Assembly And Checkout |
| PCMMU | Pulse Code Modulation Master Unit |
| GF | Gage Factor |
| PGHM | Payload Ground Handling Mechanism |
| FAB | Fabricate |
| GRE | Gamma Ray Explorer |