| Acronym | Meaning |
| OTIS | One-dimensional Transport With Inflow And Storage |
| FIT | Flow Injection Titration |
| CLS | Characteristic Loss Spectroscopy |
| QRA | Quantitative Risk Assessment |
| ICSCF | Internally Consistent Self-consistent Field |
| FPC | Federal Power Commission |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| GIXAS | Grazing Incidence X-ray Absorption Spectroscopy |
| ITER | International Toxicity Estimates For Risk |
| PVEC | Photovoltaic Energy Conversion |