| Acronym | Meaning |
| RMCSTEP | Repartitioned Multiconfigurational Spin-tensor Electron Propagator |
| NCLAN | National Crop Loss Assessment Network |
| AGR | Advanced Gas-cooled Reactor |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| UPOT | Union Pacific Oxidation Test |
| ZCCSD | Z-vector Coupled Cluster (with) Single (and) Double Excitation |
| ALTER | Acceptable Long-term Exposure Range |
| REIMEP | Regulation European Interlab. Measurement Evaluation Program |
| TALIF | Two-photon Absorption Laser Induced Fluorescence |
| ESIG | European Solvents Industry Group |