| Acronym | Meaning |
| APL | Alternative Pollutant Limits |
| QSEX | Quadrature Selective Excitation |
| PSM | Pflanzenschutzmittel; Pesticides |
| ICU | Intensive Care Unit |
| RH | Relative Humidity |
| PBTK | Physiologically Based Toxicokinetics |
| ZPP | Zn Protoporphyrin (lead Poisoning Indicator) |
| CNMMN | Commission On New Minerals And Mineral Names |
| PCF | Pair Correlation Function |
| OSM | US Office Of Surface Mining Reclamation And Enforcement |