| Acronym | Meaning |
| DFAA | Dissolved Free Amino Acids |
| NETAC | National Environmental Technol. Applications Corporation |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |
| ARRPA | Air Resources Regional Pollution Assessment Model |
| TEQ | Toxicity Equivalent |
| ACE | Affinity Capillary Electrophoresis |
| VCM | Variational Cellular Method (for Electronic Structure Calcns.) |
| SASS | Source Assessment Sampling System |
| CPMCHF | Coupled Perturbed Multiconfiguration Hartree-Fock |
| ATCM | Air Toxics Control Measure |