| Acronym | Meaning |
| FAPS | Field-effect-addressable Potentiometric Sensor |
| FNAL | Fermi National Accelerator Laboratory |
| SPADA | Simulation Program For Air Dust Concentration Analysis |
| MSC | Molecular Simulated Crystal Method (in Compton Profile Calcns.) |
| TAD | Thermophilic Aerobic Digestion (of Sewage Sludge) |
| PPI | Proton Pump Inhibitor |
| RQTOX | Reportable Quantities For Chronically Toxic Hazardous Substances |
| AESA | Association Of Environmental Scientists And Administrators |
| XCC | Expectation-value Coupled-cluster (in Correlation Energies And Electronic Properties Of Many-electron Systems Calcns.) |
| RAC | Reference Air Concentration (USEPA) |