extraterrestrial
//ˌɛkstrətəˈrɛstriəl//
Adjective
extraterrestrialCanonical form
1
Originating, existing, or occurring outside the Earth or its atmosphere.
Scientists are searching for extraterrestrial life on other planets.
Synonym
Antonym
Noun
extraterrestrialSingular
extraterrestrialsPlural
1
A being from outside the Earth; an alien life form.
Scientists are searching for signs of extraterrestrials in the universe.