| Acronym | Meaning |
| MF | Modifying Factor (in Oral RfD) |
| ESD | Element-Specific Detector |
| DSS | Decision Support System |
| NAMA | National Air Monitoring Audits |
| WRITE | Waste Reduction Innovative Technology Evaluation (US EPA) |
| AIMB | Analogy And Intelligence In Model Building |
| MW | Molecular Weight |
| RNR | Ribonucleotide Reductase |
| RBE | Relative Biological Effectiveness |
| DWPO | Distorted Wave Polarized Orbital |