Definition of Marsokhod in US English:

Marsokhod

noun

Astronautics
  • A Russian robotic vehicle designed to transmit information about the planet Mars while travelling over its surface.

Origin

1970s; earliest use found in Science News. From Russian marsoxod (also transliterated marsokhod) from Mars + -o- + -xod (from xodit′ to go, walk), after lunoxod lunokhod.