| Acronym | Meaning |
| RAS | Reflection-absorption Spectroscopy |
| NWC | National Water Council (UK) |
| APDG | Antisymmetrized Product Of Delocalized Geminals (wave Function) |
| ALR | Augmenter Of Liver Regeneration |
| MPRSA | Marine Protection |
| DOTS | Digital-optical Technology System |
| DELFIA | Dissociation-enhanced Lanthanide Fluoroimmunoassay |
| A/PI | Ab Initio Perturbed Ion (quantum Clacn. Method) |
| ISPM | In-situ Particle Monitor |
| LIPAS | Laser Induced Photoacoustic Spectroscopy |