| Acronym | Meaning |
| RAM | Reference-system Average Mayer-function (in Perturbation Theory) |
| PTR | Photothermal Radiometry |
| MST | Microbial Source Tracking |
| WDXRF | Wavelength Dispersive X-Ray Fluorescence |
| PI | Pollution Index |
| IRN | Indicator Radionuclide |
| SLAPS | Superconducting Large Area Phonon Sensors |
| STARS | Strategic Targeting Activities Reporting System |
| NIAID | National Institute Of Allergy And Infectious Diseases |
| TAS | Total Analysis Systems |