Proper noun
Sondes (plural Sondeses)
A surname
A Jupiter aerobot might also drop sondes deep into the atmosphere and relay their data back to an orbiter until the sondes are destroyed by temperature and pressure. Source: Internet
One mission concept, the Venus Aerobot Multisonde (VAMS), envisions an aerobot operating at altitudes above convert that would drop surface probes, or "sondes", onto specific surface targets. Source: Internet
The balloon would then relay information from the sondes directly to Earth, and would also collect planetary magnetic field data and other information. Source: Internet