| Acronym | Meaning |
| DHF | Derivative Hartree-Fock (quantum Theory In Calcns. On Mols.) |
| GCECD | Gas Chromatography Electron Capture Detector |
| BACT | Best Available Control Technology |
| GPEF | Generalized Potential Energy Function |
| BAL | Broad Absorption Line |
| NMOG | Non-Methane Organic Gases |
| AMSA | Association Of Metropolitan Sewerage Agencies |
| XRD | X-ray Diffraction Analysis |
| VBCI | Valence Bond Configuration Interaction |
| DARC | Description |