| Acronym | Meaning |
| APET | Accident Progression Event Tree |
| WERC | World Environment And Resources Council |
| IFIAS | International Federation Of Institutes For Advanced Study |
| ADTF | At Depth Test Facility |
| AGR | Advanced Gas-cooled Reactor |
| NPI | NEXRAD Product Interface |
| SWEAT | Severe Weather Threat |
| DAI | Data Assimilation Initiative |
| IMAGES | Intermediate Model For The Annual And Global Evolution Of Interactive Systems |
| EH | Oxidation Potential |