| Acronym | Meaning |
| ZLC | Zero Length Column |
| DIGGER | Discrete Isolation From Gradient-governed Elimination Of Resonances |
| CCAA | Canadian Clean Air Act |
| CDF | Cumulative Distribution Functions |
| LNO | Localized Natural Orbital |
| FCHF | Frozen-core Hartree-Fock |
| JULIC | Juelich Isochronous Cyclotron |
| NASICON | Na Super-ionic Conductor |
| HT | Herzberg-Teller (wave Functions) |
| CIRA | COSPAR International Reference Atmosphere |