| Acronym | Meaning |
| LST | Light Scattering Tomography |
| SIMPLISMA | Simple-to-use Interactive Self-modeling Mixture Analysis |
| EK | Extended Koopmans (method In Ionization Potential Calcns.) |
| MSHA | Mine Safety And Health Administration (US) |
| SSR | Simple Sequence Repeat |
| RLS | Recursive Least Squares (algorithm) |
| TTO | Transient Tracers In The Ocean |
| CRDA | Cooperative Research And Development Agreement |
| LFA | Long-chain Fatty Acid(s) |
| NRAO | National Radio Astronomy Observatory |