| Acronym | Meaning |
| RQCISD | (spin) Restricted QCISD |
| ECSXRF | Electrochemisorption X-ray Fluorescence |
| QRA | Quantitative Risk Assessment |
| EROS | Elaboration Of Reactions For Organic Synthesis |
| PPS | Poly (phenylene Sulfide) |
| LFMO | Ligand Field Method Combined With Linear Combination Of Atomic Orbitals-molecular Orbital Method |
| RDW | Relativistic Distorted Wave |
| IDMS | Isotope Dilution Mass Spectrometry |
| AGNPS | Agricultural Non-point Source Pollution |
| SXPS | Soft X-ray Photoelectron Spectroscopy |