extraterrestrial JUST WRITTEN FOR YOU
/ˌɛkstɹətɚˈɛstɹi.əl/ · ex.trat.ter.res.ti.eral
noun
- A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien. The discovery of extraterrestrial life would be a groundbreaking moment in human history.
- A celestial body or object originating from outside of the Earth's atmosphere, from space, or from another planet. The telescope captured stunning images of the extraterrestrial asteroid hurtling through the galaxy.
adjective
- Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment. The extraterrestrial environment on Mars is vastly different from that of Earth.
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Did you know? The term 'extraterrestrial' was popularized by science fiction authors such as H.G. Wells and Isaac Asimov, who used it to describe life beyond Earth in their works.