| Acronym | Meaning |
| TRMM | Tropical Rainfall Measuring Mission |
| MST | Microbial Source Tracking |
| SC-MEH-MO | Self-consistent-modified Extended Hueckel-MO |
| NCCLS | National Committee For Clinical Laboratory Standards |
| SRAPW | Scalar Relativistic Augmented Plane Wave |
| DRF | Dose Reduction Factor |
| DELCD | Dry Electrolytic Conductivty Detector |
| MMI | Mucous Membrane Effects |
| SIC | Silicon Integrated Circuit |
| HRXRD | High Resolution X-ray Diffraction |