Dictionary

extraterrestrial

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>

First Known Use of EXTRATERRESTRIAL

1848

2extraterrestrial

noun

Definition of EXTRATERRESTRIAL

:  an extraterrestrial being

First Known Use of EXTRATERRESTRIAL

1950

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