| Acronym | Meaning |
| ETEAO | Even-tempered Exponential Atomic Orbital |
| SOEF | Specific Odor Emission Factor (odor Source Evaluation) |
| VIC | Vapor Injection Cure |
| PIRI | Photoinduced Rydberg Ionization |
| TART | Tip-angle Reduced T1 Imaging |
| VMAT | Vesicular Monoamine Transporter |
| CTD | Conductivity |
| PMP2 | (spin) Projected Moeller-Plesset Second-order (perturbation Theory) |
| ECRC | Environmental And Contaminants Research Center |
| ENC | Effective Nuclear Charge (model For Mol. Property Calcns.) |