| Acronym | Meaning |
| HS-MR-CCSD | Hilbert Space-multireference-coupled Cluster (with) Single (and) Double (excitations) |
| ARRPA | Air Resources Regional Pollution Assessment Model |
| IAC | Impregnated Activated Carbon |
| CEQA | California Environmental Quality Act |
| SPG | Sequential Product (of) Geminals |
| HRS | Hazard Ranking System |
| RSF | Radial Structure Function |
| AAAS | American Association For The Advancement Of Science |
| SINDO | Symmetrically Orthogonalized Intermediate Neglect Of Differential Overlap |
| BAW | Bulk Acoustic Wave |