| Acronym | Meaning |
| MSL | Mean Sea Level |
| NEXUS | Next-generation Upper-air Sounding System |
| UMIST | University Of Manchester Institute Of Science And Technology |
| EM-SCATTERING | Electromagnetic Scattering |
| BOR | Burnout Risk |
| GTOS | Global Terrestrial Observing System |
| VCO | Voltage-controlled Oscillation |
| VM/CMS | Virtual Machine/Conversational Monitor System |
| FFP | Firm Fixed Price |
| AO | Annotated Outline |