| Acronym | Meaning |
| L2 | Square Integrable (wave Function) (in Electron-atom Or -mol. Collisions) |
| ETI | Environmental Testing Industry |
| LOCV | Lowest-order Constrained Variation |
| SMSO | Spinor Molecular Symmetry Orbital |
| IASPEI | International Association Of Seismology And Physics Of The Earth's Interior |
| SCAQMD | South Coast Air Quality Management District |
| AAEC | Australian Atomic Energy Commission |
| MVFF | Modified Valence Force Field |
| IMOA | Iterative Maximum Overlap Approximation |
| CAM | Complex Angular Momentum (for Rotationally Inelastic Scattering) |