| Acronym | Meaning |
| ETSAP | Energy Technology Systems Analysis Program |
| COP | Crystal Originated Particle |
| EPI | Echo-planar Imaging |
| HFEGE | Hara Free-electron-gas Exchange (potential) |
| JAXA | Japan Aerospace Exploration Agency |
| ATMOS | Atmospheric Trace Molecule Spectroscopy |
| CETO | Cartesian Exponential Type Orbital |
| MOVB | MO-valence Bond |
| TMO | Truncated Molecular Orbital |
| WORM | Write Once Read Many |