| Acronym | Meaning |
| MULAP | Mulliken Approximation |
| AMSA | Association Of Metropolitan Sewerage Agencies |
| HPV | Hypoxic Pulmonary Vasoconstriction |
| BKW | Bobylev-Krook-Wu (method For Solving The Boltzmann Equation For A Mol. System) |
| TSPA | Total System Performance Assessment |
| NSDWR | National Secondary Drinking Water Regulations |
| TEC | Transport Emergency Card |
| ILAC | International Laboratory Accreditation Cooperation |
| TMFA | Three-mode Factor Analysis |
| OETP | Orbiter Electron Temp. Probe |