| Acronym | Meaning |
| IMS | Ion Mobility Spectrometry |
| PSPR | Perfectly Stirred Pulsed Reactor |
| PTA | Packed Tower Aeration |
| SLRS | Selective Laser Reactive Sintering |
| CHAPEL | Continuous Hydrogen Analysis By Pressure Evaluation In Liquids |
| SMCRA | Surface Mining Control And Reclamation Act |
| OUST | Office Of Underground Storage Tanks |
| CARS | Corrective Action Reporting System (now Known As RCRIS) |
| SSER | Spinless Salpeter Equation (with) Retardation |
| EPO | European Patent Organization |