extraterrestial

Adjective

extraterrestrial (comparative more extraterrestrial, superlative most extraterrestrial)

1. Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.
   • Residents of the city of Voronezh insisted today that lanky, three-eyed extraterrestrial creatures had indeed landed in a local park and gone for a stroll and that a seemingly fantastic report about the event carried Monday by the official press agency Tass was absolutely true.1989 October 11, Esther B. Fein, “U.F.O. Landing Is Fact, Not Fantasy, the Russians Insist”, in The New York Times, →ISSN, →OCLC, archived from the original on 12 Oct 2012, Section A, page 6

See all 2 meanings of extraterrestrial