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Synonyms

Martian

American  
[mahr-shuhn] / ˈmɑr ʃən /

adjective

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


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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an inhabitant of Mars, esp in science fiction

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of Martian

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The K2-18b claim relied on possible atmospheric signatures detected from across interstellar distances, whereas the Martian case concerned a rock that could be studied directly and in much greater detail.

From Science Daily Sep. 9, 2026

One theory for the origin of the Martian moons -- the "giant impact" hypothesis -- is that they formed after a celestial body collided with Mars.

From Barron's Aug. 16, 2026

"Imagine you're a Martian, you're just about to invade Earth, you're hiding in the moon... and suddenly you meet the martial music of the bagpipe."

From BBC Jul. 30, 2026

After "Saving Private Ryan," "The Martian" and "Interstellar," many jokes have also been made about Damon once again starring in a film in which his character struggles to get home.

From Barron's Jul. 26, 2026

Thomas knew enough about science to realize that a Martian invasion couldn’t be true.

From "Spooked!" by Gail Jarrow

Spotted in July 2024, the reddish mudstone contains organic compounds and other minerals that could have supported bygone microbial Martians.

From The Wall Street Journal Apr. 23, 2026

Quirk was always a few covers away: The Day The Martians Landed, screamed one headline, with two alien spaceships looming dramatically; or ESP: Fact Or Fiction, as part of a series of "eternal controversies".

From BBC Dec. 27, 2023

We’re saved only because the Martians are infected by terrestrial germs.

From Los Angeles Times Oct. 30, 2023

Belief in Martians sprang in large part from a wealthy amateur astronomer, Percival Lowell, who built the observatory that still bears his name.

From Scientific American Aug. 25, 2023

If Europeans and Americans could perform such feats, why not Martians?

From "Cosmos" by Carl Sagan

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