| Acronym | Meaning |
| TDS | Total Dissolved Solids |
| AMESA | Adsorption Method For Sampling Of Dioxins |
| ECS | Energy-corrected Sudden (scaling Theory In Mol. Collisions) |
| CASSCF-CCI | Complete Active Space Self-consistent Field-contracted CI |
| DOP | Dissolved Organic Phosphorus |
| EBB | Electronic Bulletin Board |
| DIA | Drug Information Association |
| TIC | Total Ion Current |
| RCTM | Regional Chemical Transport Model |
| ARS | Agricultural Research Service (US Dept. Of Agriculture) |