| Acronym | Meaning |
| TTP | Tocopherol Transfer Protein |
| UHIPI | Ultrahigh Intensity Post-ionization |
| CASSCF | Complete Active Space-self Consistent Field |
| VMT | Vehicle Miles Traveled |
| CFSRM | Coherent Forward Scattering Resonance Monochromator |
| CBOD | Carbonaceous Biochemical Oxygen Demand |
| ESRIN | European Space Research Institute |
| DFAA | Dissolved Free Amino Acids |
| OSTLS | Optical Saturation Thermal Lens Spectrometry |
| API | Atmosheric Pressure Ionization |