| Acronym | Meaning |
| IOBM | In Ocean By Mistake |
| STDCE | Surface Tension Driven Convection Experment |
| C&T | Communications & Tracking |
| RPM | Retro Propulsion Module |
| SNU | Solar Neutrino Units |
| PSR | PulSaR |
| OTHB | Over The Horizon Backscatter |
| MITI | Ministry Of International Trade And Industry |
| HAO | High Altitude Observatory |
| HIRDLS | High Resolution Dynamics Limb Sounder |