| Acronym | Meaning |
| MBMS | Molecular Beam Mass Spectrometry |
| SAR | Synthetic Aperture Radar |
| EIIA | European Information Industry Association |
| RWA | Rotating Wave Approximation |
| IRMM | Institute For Reference Materials And Measurements |
| PTA | Packed Tower Aeration |
| LCMTO | Linear Combination Of Muffin-tin Orbitals |
| PRA | Probabilistic Risk Assessment |
| MCQDPT2 | Second-order Multiconfigurational Quasi-degenerate Perturbation |
| LVDT | Linear Variable Differential Transformer |