| AI | artificial intelligence |
| AM | advanced manufacturing |
| ASCR | Advanced Scientific Computing Research |
| DOE | Department of Energy |
| ECP | Exascale Computing Project |
| FFRDC | federally funded research and development center |
| FNO | Fourier neural operator |
| GPT | generative pretrained transformer |
| HPC | high-performance computing |
| LDRD | laboratory-directed research and development |
| LLM | large language model |
| LLNL | Lawrence Livermore National Laboratory |
| MoE | mixture-of-experts |
| NNSA | National Nuclear Security Administration |
| NREL | National Renewable Energy Laboratory |
| PDE | partial differential equations |
| PNNL | Pacific Northwest National Laboratory |
| RAG | retrieval-augmented generation |
| SSP | U.S. Stockpile Stewardship Program |
| VVUQ | verification, validation, and uncertainty qualification |