| Acronym | Meaning |
| POCP | Photochem. Ozone Creation Potential |
| PANAK | Peroxyacetyl Nitrate Aldehyde Ketones |
| WPI | Waste Policy Institute |
| BOCV | Biorthogonality Constrained Variation Method |
| CCI | Complete Configuration Interaction |
| EMR | Electronically Mediated Reaction |
| SHR | Selective Hybrid Reduction |
| CCA | Crystalline Cluster Approach (in Electronic Structure Calcns.) |
| NNSA | National Nuclear Security Administration |
| OUST | Office Of Underground Storage Tanks |