| Acronym | Meaning |
| CI-TD-HG | Configuration Interaction Time-dependent Hartree Grid |
| MFI | Mean Fluorescence Intensity |
| HRT | Hormone Replacement Therapy |
| PIC | Products Of Incomplete Combustion |
| HFA | Humic And Fulvic Acids |
| ARPA | Advanced Research Projects Agency |
| NAWDEX | National Water Data Exchange |
| AIST | Agency Of Industrial Science And Technology (Japan) |
| MEP | Molecular Electrostatic Potential |
| BUN | Blood Urea Nitrogen |