| Acronym | Meaning |
| AEOS | Analytic Equation-of-state |
| APET | Accident Progression Event Tree |
| DRD&DAA | Environmental Research |
| NWRC | National Weather Records Center |
| EGTF | Electron Gun Test Facility |
| GTC | Gigatons Of Carbon |
| IUCR | International Union Of Crystallography |
| ABM | Antiballistic Missile |
| MSCP | Mass Store Control Processor |
| ASTHO | Association Of State & Territorial Health Officials |