| Acronym | Meaning |
| ACSI | Accelerated Strategic Computing Initiative (for Fusion Reactor) |
| SXES | Soft X-ray Emission Spectroscopy |
| EDTGA | Electrodynamic Thermogravimetric Analysis |
| CAWAI | Commission On Atomic Weights And Isotope Abundances |
| DOJ | U.S. Department Of Justice |
| RIXS | Resonant Inelastic X-ray Scattering |
| ERMS | Energy Resolved Mass Spectrometry |
| OPSE | Optically Pumped Stimulated Emission |
| SPLEED | Spin Polarized Low-energy Electron Diffraction |
| NPOESS | National Polar Orbiting Environmental Satellite System |