| Acronym | Meaning |
| PSI | Pollution Standard Index |
| EGDN | Ethylene Glycol Dinitrate |
| CNP | C-type Natriuretic Peptide |
| ZPP | Zn Protoporphyrin (lead Poisoning Indicator) |
| LEL | Lower Explosion Limit |
| DIMET | Desorption Induced By Multiple Electronic Transitions |
| GITT | Galvanostatic Intermittent Titration Technique |
| LHSV | Liquid Hourly Space Velocity |
| VEOMP | Valence-electron-only Model Potential (for Mol. SCF Calcns.) |
| AQF | American Quality Foundation |