| Acronym | Meaning |
| MWP | Moving Wave Packet (model For Mol. Scattering) |
| ECAP | Equal Channel Angular Pressing |
| NETI | National Enforcement Training Institute |
| RCTM | Regional Chemical Transport Model |
| PCT | Photoinduced Charge Transfer |
| HIC | Hydrogen-induced Cracking |
| NREL | National Renewable Energy Laboratory (formerly SERI) |
| SHIRE | Southern Hemisphere Infrared Experiment |
| GAM | Generalized Additive Model |
| RS | Rayleigh Schroedinger (perturbation Theory) |