| Acronym | Meaning |
| PFG | Pulsed Field Gradient |
| LNO | Localized Natural Orbital |
| VDZ | Valence Double Zeta |
| FOEA | First-order Error Analysis |
| EFG | Electric Field Gradient |
| CWTC | Chemical Waste Transportation Council |
| PQC | Piezoelectric Quartz Crystal |
| GI | Many Electron Wave Functions That Are Simultaneously Eigen-functions Of The Total Spin Projection Operators And Satisfy The Pa |
| RDEQ | Reduced Dimensionality Exact Quantum (method For Reactive Scattering) |
| CAIS | Calcium-aluminum-rich Inclusions |