| Acronym | Meaning |
| STEP | Soil Treatment Evaluation Program |
| PGE | Platinum Group Elements |
| TAMS | Tandem Accelerator Mass Spectrometry |
| GKS | Gaspar-Kohn-Sham (potential For Exchange And Correlation In Band Structure Calcns.) |
| FPC | Fixed Partial Charge |
| MAER | Maximum Allowable Emission Rate |
| WBC | White Blood Cell |
| PWTF | Plane-wave Translation Factors (in Atom-ion Inelastic Collisions) |
| PMIRRAS | Polarization Modulation Infrared Reflection Absorption Spectroscopy |
| SPADE | Stratospheric Photochemistry |