| Acronym | Meaning |
| SS | Suspended Solids |
| WECC | Western European Calibration Cooperation |
| OMNMHCE | Organic Material Nonmethane Hydrocarbon Equivalent |
| ODS | Ozone Depleting Substances |
| GCS | Geo-Common Subsystem (subsystem Of AIRS) |
| FINES | Furnace Ionization Nonthermal Excitation Spectrometry |
| TFDW | Thomas-Fermi-Dirac-Von Weizsaecker (method For Electronic Structure Calcns. On Mols.) |
| LSIMS | Liquid Secondary Ion Mass Spectrometry |
| VCXO | Voltage Controlled Crystal Oscillator |
| AVDP | Analytic Velocity-dependent Potential (for Electron Scattering) |