| Acronym | Meaning |
| RZWQM | Root Zone Water Quality Model |
| IRTF | NASA Infrared Telescope Facility |
| IOSRR | Infinite Order Sudden Rigid-rotor Approximation |
| MIDAS | Microimaging Dust Analysis System |
| NTU | Nephelometric Turbidity Unit |
| FOLCI | Fiber Optic Low-coherence Interferometry |
| CMSM | Continuum Multiple-scattering Model |
| EMP | Electron Micro-probe |
| SSMBE | Solid Source Molecular Beam Epitaxy |
| FOEA | First-order Eikonal Approximation |