| Acronym | Meaning |
| SRM | Standard Reference Material |
| CAS-SCF | Complete Active Space SCF (a CI-type Method) |
| MECOP | Modified Electron Correlation Polarization (potential) |
| DQMC | Diffusion Quantum Monte Carlo (method In Atom And Mol. Calcns.) |
| EAAPS | Electron-excited Auger-electron Appearance Potential Spectroscopy |
| APSTNG | Associated-particle Sealed-tube Neutron Generator |
| CASSCF | Complete Active Space-self Consistent Field |
| HHPN | Hydraulic High Pressure Nebulization |
| RAINS | Regional Acidification Information And Simulation |
| IRSID | French Research Institute Of Siderurgy |