Definition of Mars
1 : the Roman god of war — compare ares
2 : the planet fourth in order from the sun and conspicuous for its red color — see planet table
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Origin and Etymology of mars
Latin Mart-, Mars
First Known Use: 14th century
MARS Defined for English Language Learners
Mars
playDefinition of Mars for English Language Learners
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: the planet that is fourth in order from the sun
Learn More about mars
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See words that rhyme with Mars Spanish Central: Translation of Mars Nglish: Translation of Mars for Spanish speakers Britannica English: Translation of Mars for Arabic speakers Britannica.com: Encyclopedia article about Mars
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