| Acronym | Meaning |
| NIEM | Noniterative Integral Equation Method |
| RCSB | Research Collaboratory For Structural Bioinformatics |
| CHRIS | Chemical Hazards Response Info System |
| STAD | Simple Town Air Dispersion Model (of Air Pollution) |
| NTN | National Trends Network |
| DWDM | Dense Wavelength Division Multiplexing |
| MXRF | Micro-beam X-ray Fluorescence |
| MCTDH/BSE | MCTDH (with) Basis Set Expansion |
| CTMP | Comprehensive Treatment Management Plan |
| SCC | Sludge Conditioning Controller |