| Acronym | Meaning |
| OA | Office Of The Administrator |
| BCCD | Brueckner Coupled Cluster With Double Excitations |
| RELAX | Refrigerator Enhanced Laser Analyzer For Xenon |
| CBEDP | Convergent-beam Electron-diffraction Pattern |
| STD | Safely Tolerated Dose |
| FKO | Franz-Keldish Oscillations |
| TSE | Transmissible Spongiform Encephalopathies |
| LGM | Linearized Green-function Method (for Electronic-structure) |
| MAMO | Multiparameter Alternant Molecular Orbital |
| HAN | Hydroxylamine Nitrate (salt) |