| Acronym | Meaning |
| EDXRF | Energy Dispersive X-ray Fluorescence |
| RSA | Rat Serum Albumin |
| DRS | Direct Recoil Spectroscopy |
| PSI | Pollution Standard Index |
| NGL | Natural Gas Liquid (usually Ethane Or Propane) |
| SRTC | Savannah River Technology Center |
| EBA | Exponentiated Born Approximation |
| RGB | Red Giant Branch (star) |
| LAMMA | Laser Microprobe Mass Analysis |
| ITFM | Intergovernmental Task Force On Monitoring |