| Acronym | Meaning |
| HRPA | Higher Random Phase Approximation |
| CASS | Computer Assisted Stratification And Sampling |
| IPC | Integrated Pollution Control |
| BFS | Beam Foil Spectroscopy |
| PYMS | Pyrolysis Mass Spectrometry |
| BMRC | British Medical Research Council |
| ESE | Electron Spin Echo |
| STO | Slater-type Orbital |
| FAEC | Factor Analysis With Equilibrium Constraints |
| QEL | Quantity Exclusion Limit |