| Acronym | Meaning |
| GMQDT | Generalized Multichannel Quantum Defect Theory |
| EBR | Experimental Breeder Reactor |
| BRNO | Best Radial Natural Orbital |
| USDA | United States Department Of Agriculture |
| LHS | Latin Hypercubic Sampling |
| IRI | International Reference Ionosphere |
| PVS | Performance Verification Sample |
| ICAC | Institute Of Clean Air Companies |
| BWCCSD | Brillouin-Wigner Coupled-cluster (with) Single (and) Double (excitations) |
| TDCC | Time-dependent Coupled-cluster |