Martian definition
A being from or living on the planet Mars, as in science fiction.
noun
Of or relating to the planet Mars or its hypothetical inhabitants.
adjective
A hypothetical inhabitant of the planet Mars, especially as a stock fictional character.
noun
Of the planet Mars.
adjective
(astronomy) Alternative capitalization of Martian, "of or pertaining to the planet Mars".
adjective
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Other Word Forms
Noun
Singular:
martian
Plural:
martiansOrigin of martian
- Middle English marcien from Latin Mārtius from Mārs Mārt- Mars
From American Heritage Dictionary of the English Language, 5th Edition