| Acronym | Meaning |
| XPD | X-ray Photoelectron Diffraction |
| REX | Reactive Extrusion |
| ACD | Available Chemicals Directory |
| OPM | Optimized Potential Model |
| CIA | Chemical Industries Association |
| PILA | Publishers International Linking Association |
| APT | Atomic Polar Tensor (in Ir Spectra Calcn.) |
| DRE | Destruction Removal Efficiency |
| MOPS | 3-(N-morpholino)propanesulfonic Acid |
| CONDO | Crystal Orbital Neglect Of Differential Overlap |