| Acronym | Meaning |
| NRPB | National Radiological Protection Board |
| NPSO | Nonpaired Spatial Orbital |
| ALN | Adaptive Learning Network |
| EKMA | Empirical Kinetic Modeling Approach (in Air Pollution) |
| BER | Bit Error Rate |
| ASCT | Autologous Stem Cell Transplantation |
| MWPC | Multiwire Proportional Chamber |
| FAMOUS | French-American Mid-Ocean Undersea Study |
| MNDO-PM3 | Modified Neglect Of Diatomic Overlap-parametric Method |
| PWIA | Plane-wave Impulse Approximation |