| Acronym | Meaning |
| PEGC | Phonon Glass Electron Crystal |
| CCPA | Cemented Carbide Producers Association |
| CETTP | Complex Effluent Toxicity Testing Program (US EPA) |
| PDEIS | Preliminary Draft Environmental Impact Statement |
| SLPI | Secretory Leukocyte Protease Inhibitor |
| QCISD(T) | Quadratic CI (with) Single (and) Double (excitations) (and) [triple Excitations Added Perturbatively] |
| BCPCT | Best Conventional Pollutant Control Technology |
| AQMD | Air Quality Management District |
| SOC | Superposition Of Configurations (wave Functions) |
| CCSOP | Close-coupling Second-order Potential (in Scattering) |