| Acronym | Meaning |
| OSTP | Office Of Science And Technology Policy |
| MOVS | Molecular Orbital Valence State |
| SPAG | Small Particle Aerosol Generator |
| NOE | Nuclear Overhauser Enhancement |
| PW-LDA | Plane Wave-local Density Approxn. |
| SIR | Selected Ion Recording |
| GAGE | Global Atmospheric Gases Experiment |
| EPW | Electron Plasma Wave |
| NLLSF | Non-linear Least Square Fitting |
| IOS-BS | Infinite Order Sudden-breathing Sphere |