| Acronym | Meaning |
| HSF | Hiller-Sucher-Feinberg (equation For Calcn. Of Spin Densities And Charge Densities In Mols.) |
| TARIS | Thermal Atomization Resonance Ionization Spectrometry |
| FOCSY | Foldover-corrected Correlation Spectroscopy |
| GPS | Global Positioning System |
| MBPM | Maximum Bubble Pressure Method |
| SNS | Separation Network Synthesis (chemical Engineering Design) |
| CAST | Cyclic Activated Sludge Technol. |
| GC/MS/DS | Gas Chromatography/mass Spectrometry/data System (Finnigan) |
| UCM | Unresolved Complex Mixt. |
| NCAP | Noncriteria Air Pollutants |