| Acronym | Meaning |
| IREB | Intense Relativistic Electron Beam |
| MIS | Metal-insulator-semiconductor (solar Cells) |
| SI | Stieltje Imaging (method For Calcg. Wave Functions) |
| LLW | Low-Level Waste |
| ACCLAIM | Antarctic Circumpolar Current Levels From Altimetry And Island Measurement |
| LTH | Luteotropic Hormone |
| SERI | Solar Energy Research Institute |
| USP | United States Pharmacopeia |
| RLM | Reflected Light Microscopy |
| FNOC | Fleet Numerical Oceanography Center (USA Navy) |