martian

Short definition from Wiktionary

Adjective

1. 1
   Alternative letter-case form of Martian (“of or pertaining to the planet Mars”).
2. 2
   Of or relating to the planet Mars, or (science fiction) its imagined inhabitants.
3. 3
   Pertaining to the astrological influence of the planet Mars; aggressive, bellicose.
4. 4
   Pertaining to battle or war; martial, military.
5. 5
   Pertaining to the Roman god Mars, the god of war.

Noun

1. 1
   Alternative form of Martian packet.
2. 2
   A person under the astrological influence of the planet Mars.
3. 3
   An inhabitant of the planet Mars.
4. 4
   An inhabitant of the planet Mars: A male Martian.

Proper noun

1. 1
   A hypothetical language spoken on Mars.