| Acronym | Meaning |
| RE | Recoupled States (in Orbiting Resonances Calcns. In Atom-mol. Inelastic Scattering) |
| NDO | Neglect Of Differential Overlap |
| MSMO | Multiple Scattering Molecular Orbital Method (also Known As X(alpha) Scattered-wave) |
| RMSEP | Root-mean-square Error Of Prediction |
| HCPA | Homomorphic Cluster Coherent Potential Approximation |
| ICOH | International Commission On Occupational Health |
| USPIO | Ultrasmall Superparamagnetic Iron Oxide |
| BADGER | Bay Area Digital Geo-Resource |
| AIN | Advanced Intelligent Networks |
| ICD | Induced Circular Dichroism |