| Acronym | Meaning |
| PSC | Polar Stratospheric Cloud |
| BU | Bargaining Unit |
| ACM | Association For Computing Machinery |
| CCSDS | Consultative Committee For Space Data Systems |
| QCMS | Quality Control Monitoring System |
| AMS | Atomic Mass Spectrometry |
| ANEC | American Nuclear Energy Council |
| TUV | Tropospheric Ultraviolet And Visible Radiation Model |
| EOL | End Of Life |
| BSI | British Standards Institute |