| Acronym | Meaning |
| PLI | Process Loading Intensity (of Biological Reactors) |
| CAREIRS | Conversion And Renewable Energy Inquiry And Referral Service |
| LDRP | Leak Detection And Repair Program |
| EPAAR | EPA Acquisition Regulation Manual |
| RCP | Recursive Correlation Partitioning |
| PAECE | Protective Action Evaluator For Chemical Emergencies |
| VA-HOMO | Vibrationally Active HOMO |
| MIRACL | Mid Infrared Advanced Chemical Laser |
| HRELS | High-resolution Electron Energy-loss Spectroscopy |
| NETL | National Energy Technology Laboratory |