| Acronym | Meaning |
| HAPEM | Hazardous Air Pollutant Exposure Model |
| AOU | Apparent Oxygen Utilization |
| DNAPL | Dense Nonaqueous Phase Liquid |
| VICIM | Virtual Institute For Chemometrics And Industrial Metrology |
| GEASIC | Gradient-expansion Approxn. Self-interaction Correction (functional |
| CFF-SCF-PI-C | Consistent Force Field-SCF-PI-configuration Interaction |
| LCTAO | Linear Combination Of Traveling Atomic Orbitals |
| HDES | Hydrodynamic Equilibrium System |
| PCCI | Premixed Charge Compression Ignition |
| PF | Protective Factor |