| Acronym | Meaning |
| SLMO | Symmetry-adapted Semilocalized Molecular Orbital |
| GUS | Groundwater Ubiquity Score |
| EIR | Environmental Impact Report |
| HMC | Human Mast Cell |
| IEP | Isoelectric Point |
| MAS | Magic Angle Spinning (solid State NMR) |
| GHF | Generalized Hellmann-Feynman (theorem) |
| LTO | Laguerre-type Orbital (an Ao) |
| UDWA | Unitarized Distorted-wave Approximation |
| IC-ACPF | Internally Contracted (multireference) Averaged Coupled Pair Functional |