| Acronym | Meaning |
| AI | Agpaitic Index [represents The (Na2O + K2O)/Al2O3 Ratio] |
| SASE | Self-amplified Spontaneous Emission |
| RASS | Ratio Acoustic Sounding System |
| GBS | Guillain-Barre Syndrome |
| SCR | Spectral Collocation Representation (of Basis Sets) |
| LAS | Laser Absorption Spectroscopy |
| IWSA | International Water Supply Association |
| IRE | Interferon-responsive Element |
| CHARM | Complex Hazardous Air Release Model |
| JAXA | Japan Aerospace Exploration Agency |