| Acronym | Meaning |
| IRC | Information Resource Center |
| LSA | Local Space Approximation |
| CETA | Carbon Emission Trajectory Assessment Model |
| XFH | X-ray Fluorescence Holography |
| CTIO | Cerro Tololo Inter-American Observatory |
| PEM | Performance Evaluation Material |
| FD | Forced Draft |
| WAXD | Wide-angle X-ray Diffraction |
| RMP2 | Restricted Moeller-Plesset Second-order (perturbation Theory) |
| DMCP | DOE Methods Compendium Program |