| Acronym | Meaning |
| ECSC | European Coal And Steel Community |
| APUD | Amine Precursor Uptake And Decarboxylation |
| CADW | Converged-adiabatic Distorted-wave (quantum Calcn. Method) |
| TREPR | Time-resolved Electron Paramagnetic Resonance |
| CDP | Contracted Density Product (in Simplification Of MO Calcns.) |
| VSFG | Vibrational Sum-frequency Generation |
| HMI | Hornbeck-Molnar Ionization (homonuclear Associative Ionization In At. Collisions) |
| XFA | X-ray Fluorescence Analysis |
| HIPCO | High-pressure Carbon Monoxide |
| AF | Atomic Fluorescence |