| Acronym | Meaning |
| SCCC | Self-consistent Charge And Configuration Method |
| LEGO | Lean Exhaust Gas Oxygen Sensor |
| WWAP | World Water Assessment Programme |
| NRPB | National Radiological Protection Board |
| LNO | Localized Natural Spin Orbital |
| ACD | Annealed Cold Drawn |
| WBEPM | Weakest Bound Electron Potential Model (theory In Calcns. Of Ionization Potentials) |
| EBM | Electron Beam Melting |
| IAQP | Indoor Air Quality Program |
| PDI | Polarization-division Interferometry |