| Acronym | Meaning |
| ALA | American Library Association |
| DFMFT | Density-functional Mean-field Theory |
| CAC | Continuous Annular Chromatograph |
| RSCA | Relativistic Semiclassical Approximation (for At. Scattering) |
| COC | Chain Of Custody |
| SRO | Short Range Order |
| ROA | Relaxed Orbital Approximation |
| HIRDLS | High-Resolution Dynamics Limb Sounder |
| ISTP | Index To Scientific And Technical Proceedings |
| L2 | Square Integrable (wave Function) (in Electron-atom Or -mol. Collisions) |