| Acronym | Meaning |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| IMSS | International Mass Spectrometry Society |
| NOLMOS | Nonorthogonal (strictly) Local Molecular Orbitals |
| UPTF | Upper Plenum Test Facility |
| RVB | Resonating Valence Bond (theory Of High-tc Superconductors) |
| TARP | Technical Assistance Response Program |
| UEBS | Unitarized Eikonal Born Series (in Electron-atom Scattering) |
| MVEG | Motor Vehicle Emissions Group |
| RTH | Resistance To Thyroid Hormone |
| LEMO | Lowest Empty Molecular Orbital (equivalent To LUMO) |