| Acronym | Meaning |
| MSMO | Multiple Scattering Molecular Orbital Method (also Known As X(alpha) Scattered-wave) |
| EDA | Ethylene Diamine |
| ECSFM | Electrochemical Scanning Force Microscopy |
| SCANIIR | Surface Composition Analysis By Neutral And Ion Impact Radiation |
| RD | Remedial Design |
| RAN | Residual Acrylonitrile |
| TPPE | Two-photon Photoemission |
| ARS | Agricultural Research Service (US Dept. Of Agriculture) |
| LCMBPT | Linked Cluster Many Body Perturbation Theory |
| MS-RC(XI) | Multiple Scattering Relativistic Correlated (calcn. Method) |