| Acronym | Meaning |
| ASK | Amplitude Shift Keying |
| ALIAS | Aircraft Laser Infrared Absorption Spectrometer |
| EFIN | Environmental Financing Information Network |
| AI | Agpaitic Index [represents The (Na2O + K2O)/Al2O3 Ratio] |
| REP | Relativistic Effective Potential |
| SAIC | Science Applications International Corporation |
| SOPITA | South Pacific Isotopic And Thermal Anomaly |
| CCE | Charge-collection Efficiency |
| AQG | Air Quality Guideline |
| HMO | Hueckel Molecular Orbital |