variants often Martian
: of or relating to the planet Mars or its hypothetical inhabitants
martian noun
often Martian

Examples of martian in a Sentence

Recent Examples on the Web
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Since landing on Mars back in 2021, Perseverance has observed, sampled and studied a wide variety of rocks, boulder fields, Martian slopes and more. — Chelsea Gohd, Space.com, 27 Oct. 2026 Over 95 percent of the Martian atmosphere consists of carbon dioxide, making survival difficult. — Mrigakshi Dixit, Interesting Engineering, 27 Oct. 2026 The spacecraft will stay on Phobos’ surface for several hours, using two independent mechanisms to collect samples from the Martian moon. — Stephen Clark, ArsTechnica, 20 Oct. 2026 Japan and China could be neck-and-neck in getting samples back from the Martian system. — ABC News, 19 Oct. 2026 See All Example Sentences for martian

Word History

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of martian was in 1880

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Cite this Entry

“Martian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/martian. Accessed 1 Nov. 2026.

Kids Definition

Martian

adjective
Mar·​tian
ˈmär-shən
: of or relating to the planet Mars or its supposed inhabitants
Martian noun
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