| Acronym | Meaning |
| AMO | Alternant Molecular Orbital |
| OSBG | Optimized Support For Biological Growth |
| ANDA | Active Nondestructive Analysis |
| EMS | Electromagnetic Susceptibility |
| IMD | Intermetal Dielectric |
| ODS | Oxide Dispersion-strengthened |
| SDR | Spin-dependent Resonance |
| EDWA | Exponential Distorted-wave Approxn. (atom-ion Electron-exchange Calcns.) |
| IMOM | Iterative Method Of Maximum Overlap |
| TOCSY | Total Correlation Spectroscopy |