| Acronym | Meaning |
| LHP-RHF | Longuet-Higgins-Pople Restricted Hartree-Fock Method |
| MTBE | Methyl Tert Butyl Ether (gasoline Additive) |
| ABMR | Atomic Beam Magnetic Resonance |
| NHOMO | Next Highest Occupied Molecular Orbital |
| RCTM | Regional Chemical Transport Model |
| EET | Electronic Energy Transfer |
| ANSI | American National Standards Institute |
| ACI | Alloy Casting Institute |
| AACC | American Association For Clinical Chemistry |
| SLEEP | Scanning Low Energy Electron Probe |