| Acronym | Meaning |
| OSSA | Office Of Space Science And Applications |
| C&T | Communications & Tracking |
| VRM | Venus Radar Mapper |
| VECO | Vernier Engine Cutoff |
| SCT | Schmidt-Cassegrain Telescope |
| SPTN | SPARTAN |
| HCMM | Heat Capacity Mapping Mission |
| XUV | Extreme Ultraviolet |
| TRMM | Tropical Rainfall Measuring Mission |
| SPDM | Special Purpose Dextrous Manipulator |