| Acronym | Meaning |
| CTM | Conditional Test Method |
| SPARS | Spatially Resolved Spectroscopy |
| QSMD | Quantum-stochastic Mol. Dynamics |
| ADC | Analog-to-digital Converter |
| NCAC | Nitrogen-containing Aromatic Compound |
| ANATEX | Across North America Tracer Experiment |
| NDWAC | National Drinking Water Advisory Council |
| EHCO | Extended Hueckel Crystal Orbital |
| PRDA | Program Research And Development Announcement |
| 3DWQM | Chesapeake Bay Three Dimensional Time Variable Water Quality Model |