| Acronym | Meaning |
| FLD | Forming Limit Diagram |
| RTDM | Rough Terrain Dispersion Model (air Quality) |
| LCCD | Linear Coupled-cluster (method With) Double (excitations) |
| HWI | Hazardous Waste Incineration |
| NAWDEX | National Water Data Exchange |
| EASTT | Environmental Advisory Service For Technology Transfer |
| USACE | US Army Corp Of Engineers |
| ECRIS | Electron Cyclotron Resonance Ion Source |
| DOIT | Federal Advisory Committee To Develop On-site Innovative Technologies |
| PDS | Piecewise Direct Standardization |