| Acronym | Meaning |
| EKT | Extended Koopmans Theorem |
| HRMS | High Resolution Mass Spectrometry |
| SOHIC | Stress-oriented Hydrogen-induced Cracking |
| HAM | Hydrogenic Atoms In Molecules |
| HCS | Heliospheric Current Sheet |
| PACAP | Pituitary Adenylate Cyclase-activating Polypeptide |
| TARFOX | Tropospheric Aerosol Radiative Forcing Observation Experiment |
| PVP | Polyvinyl Pyrrolidone |
| AUDM | Advanced Unified Defect Model |
| AS | Air Stripping |