| Acronym | Meaning |
| AREELS | Angle-resolved Electron Energy Loss Spectroscopy |
| TMMC | Tetramethylammonium Manganese Trichloride |
| FOJT | First-order Jahn-Teller |
| CWTM | Compound Weaire-Thorpe Model (in Electronic-structure Calcns.) |
| EPC | European Patent Convention |
| RVS-SCF | Reduced Variational Space-self-consistent Field (in Quantum Calcns. On Hydrogen Bonding) |
| HLW | High-Level Waste |
| LICS | Laser-induced Continuum Structure |
| EOX | Extractable Organic Halides |
| PIC | Public Information Center |