| Acronym | Meaning |
| EMOA | Extended Maximum Overlap Approximation |
| HFMD | Hellmann-Feynman Mol.-dynamics (method In Electronic Structure And Geometry Calcns.) |
| CESR | Cornell Electron Storage Ring |
| ALOTS | Airborne Lightweight Optical Tracking System |
| RFA | Renormalized Free Atom (model |
| PSTM | Photon Scanning Tunneling Microscopy |
| MADE | The Macro-Dispersion Test Site |
| SD-POE | Sigma-dependent Pi-orbital Electronegativity Model |
| LMSAL | Lockheed Martin Solar And Astrophysics Laboratory |
| OCE-DF | One-center Expansion Dirac-Fock |