| Acronym | Meaning |
| APUD | Amine Precursor Uptake And Decarboxylation |
| FMAR | Ferromagnetic Antiresonance |
| NERVA | Nuclear Engine For Rocket Vehicle Application |
| APU | Acid Purification Unit (acid Recovery System) |
| TEAS | Thermal Energy Atom Scattering |
| DHS | Double Heterostructure |
| LCRA | Linear Combination Of Rydberg Orbitals |
| EMTO | Extended Muffin-tin Orbital Method |
| RNG | Renormalized Group Theory |
| FIRST | Field-portable Imaging Radiometric Spectrometer Technology |