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

If a Martian came to Earth and wanted to know what made the Stones special, a listen to “Sticky Fingers” would make it abundantly clear.

From Los Angeles Times • Jul. 10, 2026

Researchers stress that these Martian minerals do not represent a known false negative.

From Science Daily • Jun. 30, 2026

"You see in the show what Martian is like 20 years down the line, compared to someone who is just starting," he says.

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

“Hundreds” of residents of Riverside Drive, on the west side of Manhattan, believed themselves to be in the path of the imaginary Martian tripods.

From "Spooked!" by Gail Jarrow