| Acronym | Meaning |
| PDFT | Perturbation Density-functional Theory |
| ABI | Automated Ball Indentation |
| CSH | Centrifugal Sudden Hyperspherical (coordinate Reactive Scattering Code) |
| SAWS | Surface Acoustic Wave Sensor |
| SET | Single Electron Transfer |
| PGAA | Prompt Gamma-ray Activation Analysis |
| ARXPS | Angular Resolved X-ray Photoelectron Spectroscopy |
| IVAP | Intimate Valence Alternation Pairs (bonding Model In Electronic Structure Calcns.) |
| ECT | Ergodic Collision Theory |
| GWPS | Groundwater Protection Strategy |