1. of or relating to the planet Mars

1. a hypothetical inhabitant of the planet Mars

Examples

• Scientists study the Martian atmosphere for signs of water.
• The rover collected samples from the Martian surface.
• In the science fiction movie, Martians invaded Earth.
• The children dressed up as Martians for Halloween.
• Martian soil contains high levels of iron oxide.
• The novel featured friendly Martians who helped humans.