| Acronym | Meaning |
| MESA | Maximum Entropy Spectral Analysis |
| RPP | Renal Perfusion Pressure |
| NIESST | Nuclear Decay-induced Excited-spin-state Trapping |
| MIRC | Michael Initiated Ring Closure |
| USDI | US Department Of Interior |
| ANS | American National Standard |
| ELSD | Evaporative Light Scattering Detector |
| AODC | Australian Oceanographic Data Center |
| FOE | First-order Exchange (in Electron-atom Scattering Calcn.) |
| SCR | Selective Catalytic Reduction |