| Acronym | Meaning |
| HWS | Hazardous Waste Site |
| OCOS | Orbital Charge-ordering State |
| CAFO | Consent Agreement/Final Order |
| ICPP | Idaho Chemical Processing Plant |
| RFE | Recursive Feature Elimination |
| PCPAA | Prompt Charged Particle Activation Analysis |
| CONDO | Crystal Orbital Neglect Of Differential Overlap |
| LTTS | Low-Temperature Thermal Separation (for Waste Soil Treatment) |
| SGR | Steam Gas Recycle (process For Shale Oil Recovery) |
| CTCMS | Center For Theoretical And Computational Materials Science |