| Acronym | Meaning |
| QLAR | Quantitative Localization Activity Relationship |
| AOB | Ammonia Oxidizing Bacteria |
| BWR | Boiling Water Reactor |
| BIR | Baculovirus IAP Repeat |
| RAL | Recommended Allowable Limit |
| HAMS | Helium Atoms Measurement System |
| BTU | British Thermal Unit |
| NIRIM | Near-IR Raman Imaging Microscope |
| NSPS | New Source Performance Standards |
| FECAP | Ferroelectric Capacitor |