| Acronym | Meaning |
| BGS | Below Ground Surface |
| ESMS | Electrospray Ionization Mass Spectrometry |
| TPSA | Total Prostate Specific Antigen |
| TAP | Temporal Anal. Of Products |
| EAP | Environmental Action Plan |
| LEEIXS | Low Energy Electron Induced X-ray Spectrometry |
| CAI | Conodont Alteration Index |
| LET | Linear Energy Transfer (in Spacecraft Power Systems) |
| RABITS | Rolling-assisted Biaxially Textured Substrates |
| APO | Aq.-phase Oxidn. |