| Acronym | Meaning |
| CM | Center Of Mass |
| PVO | Pioneer Venus Orbiter / Protivo-Vosdushniya Oborona |
| RVSN | Raketniye Voiska Stratigcheskovo Naznacheniya |
| DDCU | DC-to-DC Converter Unit |
| FUSE | Far Ultraviolet Spectroscopic Explorer |
| IOBM | In Ocean By Mistake |
| ARC | Astrophysical Research Consortium |
| MARS | Series Of Soviet Mars Spacecraft |
| RFM | Reconfigurable Furnace Module |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |