| Acronym | Meaning |
 | GRS | Gamma Ray Spectrometer |
| LY | Light Year (usu. Ly) |
| VTVL | Vertical Takeoff Vertical Landing |
| SSTO | Single Stage To Orbit |
| ADEOS | Advanced Earth Observing Satellite |
| MISR | Multiangle Imaging Spectro-Radiometer |
| VHF | Very High Frequency |
| GMRT | Giant Meter-wave Radio Telescope |
| LRSI | Low-temperature Reusable Surface Insulation |
| GTO | Geostationary Transfer Orbit |
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