| Acronym | Meaning |
| RILS | Regulatory Interpretation Letters |
| VLE | Vapor-liquid Equilibrium |
| UTI | Urinary Trypsin Inhibitor |
| PELAN | Pulsed Elemental Analysis With Neutrons |
| CCW | Constituent Concentrations In Waste |
| TIWSLS | Time-independent Wave Packet Schroedinger (and) Lippmann-Schwinger (equation) |
| CPF | Cancer Potency Factor |
| TC | Toxicity Characteristic |
| FTD | Frontotemporal Dementia |
| MESNA | Sodium 2-mercaptoethane Sulfonate |