| Acronym | Meaning |
| KDP | Potassium Dihydrogen Phosphate |
| STEM | Scanning-transmission Electron Microscope |
| SPRINT | Sorted Position Radar Interpolator |
| CAC | Central Analysis Center (NMC) |
| ARG | Accident Response Group |
| SMETE | National SMETE (Science |
| DEA | Drug Enforcement Administration |
| ISWS | Illinois State Water Survey |
| CCAWG | Climate Change And Assessment Working Group |
| NAPAP | National Acid Precipitation Assessment Program |