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English definition of “Martian”

Martian

noun [C] uk   /ˈmɑː.ʃən/ us    /ˈmɑːr-/
a creature, usually appearing in films and books, who is believed to come from Mars

Martian

adjective uk   /ˈmɑː.ʃən/ us    /ˈmɑːr-/
relating to the planet Mars, or to creatures that are believed to come from Mars : a study of the Martian atmosphere in comparison with that of Earth
(Definition of Martian from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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