adjective, often capitalized
mar·​tian | \ ˈmär-shən How to pronounce martian (audio) \

Definition of martian

: of or relating to the planet Mars or its hypothetical inhabitants

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Other Words from martian

martian noun, often capitalized

Examples of martian in a Sentence

Recent Examples on the Web Cincinnati Shakespeare Company presents a riveting adaptation of the H.G. Wells book about a martian invasion of earth. Luann Gibbs, The Enquirer, "Things to do in Cincinnati this week: Oct. 26-Nov. 1," 25 Oct. 2020 If this ambitious sequence goes as planned, NASA, together with the European Space Agency, will have transported martian dirt to Earth for the first time. Marina Koren, The Atlantic, "NASA Goes Looking for Tiny Ancient Martians," 30 July 2020 If Perseverance somehow happened upon living martian microbes, scientists would have to face a host of ethical questions about what to do with them. Marina Koren, The Atlantic, "NASA Goes Looking for Tiny Ancient Martians," 30 July 2020 Its purpose is simply to demonstrate the feasibility of flight in the thin martian atmosphere. William Harwood, CBS News, "NASA readies launch of Mars rover to look for signs of past life, collect samples for return to Earth," 28 July 2020 When the approaching spacecraft first hits the thin martian atmosphere, drag on its heat shield slows it from 21,000 to 1700 kilometers per hour. Daniel Clery, Science | AAAS, "European Mars rover in a ‘race against time’ to fix parachutes," 26 Nov. 2019 Its martian robots are assembled in cleanrooms, with many components baked in ovens or doused in chemicals. Paul Voosen, Science | AAAS, "NASA must rework planetary protection plans, panel advises," 18 Oct. 2019 There is now strong evidence that any life signatures would have been eroded away over time due to the harsh martian environment, according to UCL's Carter. Dominic Rech, CNN, "Europe is sending an alien-hunting camera to Mars," 20 Aug. 2019 The level is typically low, often in the parts per trillion range, and seems to rise and fall as martian seasons change. Alexandra Witze, Scientific American, "Mars Rover Detects “Excitingly Huge” Methane Spike," 24 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'martian.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of martian

1880, in the meaning defined above

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Time Traveler for martian

Time Traveler

The first known use of martian was in 1880

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Statistics for martian

Last Updated

30 Oct 2020

Cite this Entry

“Martian.” Dictionary, Merriam-Webster, Accessed 31 Oct. 2020.

More from Merriam-Webster on martian

Nglish: Translation of martian for Spanish Speakers

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