| Acronym | Meaning |
| NHRL | Northern Hemisphere Reference Line |
| RZM | Root Zone Method (of Wastewater Treatment) |
| LDC | Liq. Dynamic Compaction |
| NFAT | Nuclear Factor For Activated T Cells |
| UTL | Upper Tolerance Limit |
| TISAB | Total Ionic Strength Adjustment Buffer (for Fluoride) |
| CARD | Contract Laboratory Program Analytical Results Database |
| CET | Center For Environmental Technology |
| C4S | Chemical Shift-specific Slice Section |
| SSRI | Selective Serotonin Reuptake Inhibitor |