| Acronym | Meaning |
| LWR | Light-water Reactor |
| ISE | Ion Selective Electrode |
| WLM | Working Level Month (for Radiation Exposure) |
| AESA | Association Of Environmental Scientists And Administrators |
| HREELS | High-resolution Electron Energy-loss Spectroscopy |
| CPMP | Committee For Proprietary Medical Products |
| IEV | Independent Event (model In Ion-atom Collisions) |
| DCN | Document Change Notice |
| MRIS | Municipal Refuse Incineration System(s) |
| PPM | Pair Population Method |