| Acronym | Meaning |
| BEWS | Biological Early Warning Systems |
| ZRPA | Zero-range Potential Approximation |
| NASP | National Aerospace Plane |
| RTU | Remote Terminal Unit |
| LMW | Low Molecular Weight |
| SIMS | Secondary Ion Mass Spectrometry |
| EPACML | Environmental Protection Agency's Composite Landfill Model |
| WET | Whole Effluent Toxicity |
| PIES | Partial Integration Exterior Scaling (in Calcns. On Resonance Positions And Lifetimes |
| PAECE | Protective Action Evaluator For Chemical Emergencies |