| Acronym | Meaning |
| MIS | Mobile Incineration System |
| HEIS | High Energy Ion Scattering |
| TCC | Thermofor Catalytic Cracking |
| DWSBA | Distorted Wave Second Born Approxn. |
| AMOS | Air Management Oversight System |
| MSBR | Molten Salt Breeder Reactor |
| EISCAT | European Incoherent Scatter Radar (atm. Sensing) |
| ARF | Absolute Response Factor |
| ORU | In Orbit Replaceable Unit (spacecraft) |
| MVE | Methyl Vinyl Ether |