| Acronym | Meaning |
| MR-L-CEPM | Multireference-linearized-coupled Electron Pair Method |
| MDS | Minimum Detectable Signal |
| NIES | National Institute For Environmental Studies (Japan) |
| MFE | Modulated Free Electron Orbital Method |
| MCY | Matsuoka-Clementi-Yoshimine (potential Function) |
| POPW | Partially Orthogonalized Plane Wave |
| SEXAFS | Surface-extended X-ray Absorption Fine Structure |
| NEC | National Electrical Code |
| CBSA | Chlorobenzenesulfonic Acid |
| POL-CI | Polarization Configuration Interaction |