Martian

American  

[mahr-shuhn] / ˈmɑr ʃən /

adjective

1. of, relating to, or like the planet Mars or its hypothetical inhabitants.

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noun

Martians plural

1. a supposed inhabitant of the planet Mars.

   The science-fiction novel was about the invasion of our planet by Martians.

Martian British  

/ ˈmɑːʃən /

adjective

1. of, occurring on, or relating to the planet Mars

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noun

1. an inhabitant of Mars, esp in science fiction

Other Word Forms

Derived Forms

• trans-Martian
  adjective

Inflected Forms

Nouns

• Martians
  plural

Etymology

Origin of Martian

1350–1400; Middle English marcien < Latin Mārti ( us ) of, belonging to Mars ( see March) + -an

Example Sentences

He plays Martian, a veteran CIA operative whose years undercover have left their mark.

From BBC • Jun. 20, 2026

"Martian was once idealistic and full of hope, then his moral compass gets eroded by the things he has to do and the sacrifices that go into it."

From BBC • Jun. 20, 2026

Though Musk’s visions of giant rocket ships, orbiting AI data centers and Martian cities remain mostly aspirational, SpaceX is now the sixth most valuable U.S.-listed company with a market cap over $2.5 trillion.

From Barron's • Jun. 17, 2026

To confirm any true evidence of past life, scientists would need to bring Martian rock samples back to Earth for detailed study.

From Science Daily • Apr. 28, 2026

“Well, I don’t answer ‘other,’ because that’s like being nothing, like maybe I could be Martian or something.

From "Blended" by Sharon M. Draper