| Acronym | Meaning |
| CNTR | Counter |
| GITG | Ground Interface Technical Group |
| SSM | EC Space Shuttle Main Engine Controller |
| HCF | High Cycle Fatigue |
| GCOS | General Computer Operational System |
| HOLC | High Order Language Computer |
| CSTS | Cryogenic Storage And Transfer System |
| FSLO | First Spacelab Payload |
| HG | Mercury |
| MLR | Monodisperse Latex Reactor |