Definition of extraterrestrial
: originating, existing, or occurring outside the earth or its atmosphere extraterrestrial life
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1848
First Known Use of extraterrestrial
1848
2
extraterrestrial
noun
ex·tra·ter·res·tri·al
Definition of extraterrestrial
: a being from another world : an extraterrestrial being
1950
First Known Use of extraterrestrial
1950
EXTRATERRESTRIAL Defined for English Language Learners
adjective
ex·tra·ter·res·tri·al
\ˌek-strə-tə-ˈre-strē-əl, -ˈres(h)-chəl\
Definition of extraterrestrial for English Language Learners
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: coming from or existing outside the planet Earth
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Spanish Central: Translation of extraterrestrial Nglish: Translation of extraterrestrial for Spanish speakers
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