| Acronym | Meaning |
| NTSB | National Transportation Safety Board |
| UHFS | Unrestricted Hartree-Fock-slater |
| ATDHF | Adiabatic Time-dependent Hartree-Fock |
| MMC | Molecular Mechanics For Clusters Model |
| DCBX | Distorted Coulomb-Born Exchange Approxn. |
| WTE | Waste-To-Energy Facility |
| CSP | Cathodic Stripping Potentiometry |
| PEGC | Phonon Glass Electron Crystal |
| CTDO | Conductivity-Temperature-Depth-Oxygen Profiler |
| FTS | Fourier Transform Spectroscopy |