| Acronym | Meaning |
| GTDA | Generalized Tamm-Dancoff Approximation |
| POP | Persistent Organic Pollutant |
| GCMFE | Glassy Carbon Mercury Film Electrode |
| EAA | Environmental Assessment Association |
| LCAO LSD | Linear Combination Of Atomic Orbitals-local Spin Density |
| IBMK | Isobutyl Methyl Ketone |
| EMS | Electromagnetic Susceptibility |
| HCC | Hepatocellular Carcinoma |
| SPL | Spent Potliner |
| SGGA | Symmetric Group Graphical Approach (in CI Calcns.) |