Dictionary
1extraterrestrial
adjective ex·tra·ter·res·tri·al \-tə-ˈres-trē-əl, -ˈres(h)-chəl\
: coming from or existing outside the planet Earth
Full Definition of EXTRATERRESTRIAL
: originating, existing, or occurring outside the earth or its atmosphere <extraterrestrial life>
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First Known Use of EXTRATERRESTRIAL
1848
2extraterrestrial
noun
Definition of EXTRATERRESTRIAL
: an extraterrestrial being
First Known Use of EXTRATERRESTRIAL
1950
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