| Acronym | Meaning |
| OMPW | Orthogonalized Modulated Plane Wave (wave Function) |
| HMBC | Heteronuclear Multiple-bond Correlation |
| UNECE | United Nations Economic Commission For Europe |
| MRP | Multidrug Resistance Protein |
| IFPM | Independent Fermi Particle Model (in Atom-ion Impact Ionization) |
| PD | Photoelectron Diffraction |
| CSHB | Chemical Safety And Hazard Investigation Board |
| PRENFLO | PRessurized ENtrained FLOw (process) [combustion And Gasification] |
| LAS | Linear Alkylbenzene Sulfonates (anionic Surfactants) |
| CLSV | Current Linear Sweep Voltammetry |