extraterrestrial

English dictionary entry

Meanings

adj
  1. Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.
noun
  1. A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.

Pronunciation

/ˌɛk.stɹə.təˈɹɛs.tɹi.əl/ En-us-extraterrestrial.oga

Word forms

extraterrestrial more extraterrestrial most extraterrestrial extra-terrestrial extraterrestrials

Etymology

From extra- + terrestrial.

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