| Acronym | Meaning |
| ECCS | Emergency Core Cooling System |
| IMOM | Iterative Method Of Maximum Overlap |
| FFSHC | Field Federal Safety And Health Councils |
| GSD | Geometric Std. Deviation |
| I AND C | Instrumentation And Control |
| RSMC | Regional Specialized Meteorological Centre |
| HMM | Half Molecule Model (for Electron Scattering By Molecules) |
| SR-CCD | Single Reference-CCD |
| OIM | Orientation Imaging Microscopy |
| FEA | Field Emitter Array |