adjective, often capitalized
mar·tian | \ˈmär-shən \

Definition of martian 

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

Keep scrolling for more

Other Words from martian

martian noun often capitalized

Examples of martian in a Sentence

Recent Examples on the Web

As winds eventually dispersed the sand on top, the negative space where the dune once stood was preserved as a pit on the martian surface. Frankie Schembri, Science | AAAS, "‘Ghost dunes’ spotted on Mars," 11 July 2018 Each martian summer, the atmosphere’s methane concentration rises to about 0.6 parts per billion. National Geographic, "Building Blocks of Life Found on Mars," 7 June 2018 Methane in the martian atmosphere has been detected before, but only in isolated patches or plumes of higher concentrations, not in any repeatable pattern. William Harwood, CBS News, "NASA's Curiosity rover finds potential building blocks of life on Mars," 8 June 2018 Another clue has added to the incentive: In a separate study in this week’s Science, Curiosity scientists report that traces of methane in the martian atmosphere rise and fall with the seasons. Paul Voosen, Science | AAAS, "NASA rover hits organic pay dirt on Mars," 7 June 2018 One of the most convincing signs of life embedded in the martian rock could be an imbalance of naturally occurring isotopes, or variations of the same element with differing numbers of neutrons. Jay Bennett, Popular Mechanics, "The Plan to Return Samples From Mars Takes a Step Forward," 30 Apr. 2018 Tiny Doppler shifts in radio broadcasts sent from Earth to receivers on InSight will reveal other details of the martian interior. Paul Voosen, Science | AAAS, "By listening for quakes on Mars, NASA lander will probe Red Planet’s interior," 18 Apr. 2018 From chemical analysis of the chunks of Mars that arrive on Earth as meteorites, researchers have a sense of the martian mantle’s composition. Paul Voosen, Science | AAAS, "By listening for quakes on Mars, NASA lander will probe Red Planet’s interior," 18 Apr. 2018 And today, the Mars rover hit an important landmark: 2,000 sols, or martian days, spent exploring and making discoveries. Avery Thompson, Popular Mechanics, "NASA's Curiosity Rover Hits 2,000 Sol (Martian Day) Milestone," 22 Mar. 2018

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.

See More

First Known Use of martian

1880, in the meaning defined above

Keep scrolling for more

Learn More about martian

Statistics for martian

Look-up Popularity

Time Traveler for martian

The first known use of martian was in 1880

See more words from the same year

Keep scrolling for more

More from Merriam-Webster on martian

See words that rhyme with martian

Spanish Central: Translation of martian

Nglish: Translation of martian for Spanish Speakers

Comments on martian

What made you want to look up martian? Please tell us where you read or heard it (including the quote, if possible).


not any or not one

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!