| Acronym | Meaning |
| RCM | Radiative Convective Model (of Climate) |
| FIMS | Field Ionization Mass Spectrometry |
| GQDPT | Generalized Quasidegenerate Perturbation Theory |
| VMS | Volcanogenic Massive Sulfide |
| PVR | Pulmonary Vascular Resistance |
| MVT | Mississippi Valley-type |
| IGLO | Individual Gauge For Localized Orbital |
| SRT | Sludge Or Solids Retention Time |
| SODAR | Sound Detection And Ranging (meteorological Instrument) |
| HECD | Hot Electron Capture Dissociation |