| Acronym | Meaning |
| CEMS | Continuous Emissions Monitoring System |
| HPCZE | High Performance Capillary Zone Electrophoresis |
| HWIR | Hazardous Waste Identification Rule |
| DGD | Decision Guidance Documents |
| UIHRS | Upflow Inclined High-rate Settlers |
| ASSIST | Abstract Semi-Markov Specification Interface To The SURE Tool [propulsion] |
| DNA | Deoxyribonucleic Acid |
| PLD | Programmable Logic Device |
| VOHAP | Volatile Organic Hazardous Air Pollutant |
| CAS-MC-SCF | Complete Active Space-multiconfiguration-SCF |