| Acronym | Meaning |
| CASPT | Complete Active Space-perturbation Theory |
| BPD | Bronchopulmonary Dysplasia |
| CELFA | Composition Evaluation By Lattice Fringe Analysis |
| HDC | High Dose Chemotherapy |
| FAAO | Free-atom Atomic Orbital |
| MIEMS | Membrane Inlet Electrochemical Mass Spectrometry |
| EWPCA | European Water Pollution Control Association |
| SOBO | Spin-orbit (coupled) Bond Orbital |
| ECETOC | European Chemical Industry |
| MOV | Motor Operated Valve |