| Acronym | Meaning |
| RH | Relative Humidity |
| ASCE | American Society Of Civil Engineers |
| NSR | New Source Review |
| FPLS | Field-programmable Logic Switch |
| MRI | Magnetic Resonance Imaging |
| TISAB | Total Ionic Strength Adjustment Buffer (for Fluoride) |
| WCBP | Well Characterized Biotechnology Pharmaceuticals |
| SOCI | Spin-orbit Configuration Interaction |
| ARF | ADP-ribosylation Factor |
| GCECD | Gas Chromatography Electron Capture Detector |