| Acronym | Meaning |
| HEP | High Energy Physics |
| CSDP | Chemical Stockpile Disposal Program |
| OPPE | Office Of Policy |
| MLK | Mixed-lineage Kinase |
| ISTEA | Intermodal Surface Transportation Efficiency Act |
| ECA | Equivalent Core Approximation |
| CEQ | Collinear Exact Quantum (method In Reactive-scattering Calcn.) |
| DPF | Diesel Particulate Filter |
| GE-PIXE | Grazing-exit Particle-induced X-ray Emission |
| DAVINS | Direct Analysis Of Very Intricate Nmr Spectra |