| Acronym | Meaning |
| SHR | Selective Hybrid Reduction |
| DSA | Doppler Shift Attenuation |
| QHA | Quasi-harmonic Approxn. (in Intramol. Vibrational Relaxation) |
| FMAR | Ferromagnetic Antiresonance |
| COMA | Cyclic Olefin Maleic Anhydride |
| FGSE | Field-gradient Spin-echo |
| SMC | Schwinger Multichannel (for Electron-mol. Scattering) |
| BTCA | Best Technology Currently Available |
| NMJ | Neuromuscular Junction |
| PIUS | Process Inherent Ultimate Safety |