/ ˈmɑːʃn; NAmE ˈmɑːrʃn/ adjective , noun
■ adjective
( astronomy ) related to or coming from the planet Mars
■ noun
an imaginary creature from the planet Mars
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WORD ORIGIN
late Middle English (in the senses subject to Mars's influence and martial ): from Latin Mars , Mart- (see Mars ) + -ian .