Added 6 October 2026
extraterrestrial
/ˌɛk.stɹə.təˈɹɛs.tɹi.əl/ adjective
In Latin: extrāterrestriālis, extrāterrestris Wiktionary
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about extraterrestrial at Wordnik → Where our words come from →
- Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.
noun
- A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.