| Acronym | Meaning |
| BAC-MP4 | Bond-additivity-corrected Moeller-Plesset 4th-order Perturbation |
| YSGG | Yttrium Scandium Gallium Garnet |
| NPV | Net Present Value {economics} |
| FORS | Fully Optimized Reaction Space |
| CVA | Characteristic Vector Analysis |
| AUFS | Absorbance Units Full Scale |
| RSMP | Rayleigh-Schroedinger-Moeller-Plesset Perturbation |
| PRP | Potentially Responsible Party (Superfund) |
| LREE | Light Rare Earth Element(s) |
| POAM | Polar Ozone And Aerosol Measurements |