| Acronym | Meaning |
| WSDA | Weighted Spin-density Approxn. |
| PIXIE | Polar Ionospheric X-ray Imaging Experiment |
| MCPSAG | Marcus-Coltrin-Path Semiclassical Adiabatic Ground-state (transmission Coeffs.) |
| CHIEF | Clearinghouse For Inventories And Emission Factors |
| LGO | Light Gas Oil |
| NIGA | Neutron Induced Gamma Activity |
| IRCWD | International Reference Center For Waste Disposal |
| XAPS | X-ray Appearance Potential Spectroscopy |
| GMA | Glycidyl Methacrylate |
| ELARP | Experimental Lakes Area Reservoir Project |