| Acronym | Meaning |
| DSMS | Depth-selective Moessbauer Spectroscopy |
| BMMO | Best Minimal Molecular Orbital |
| AEHS | Association For The Environmental Health Of Soils |
| OLS | Ordinary Least Squares |
| IEE | Institution Of Electrical Engineers |
| PHD | P-helicity Decoupling Scheme (p=momentum) |
| HMO | Hueckel Molecular Orbital |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| RRPT | Registered Radiation Protection Technologist |
| LTMED | Low Temperature Multi-effect Distillation |