ex·tra·ter·res·tri·al
ˌek-strə-tə-ˈre-strē-əl 
-ˈres-chəl,
-ˈresh-chəl
: originating, existing, or occurring outside the earth or its atmosphere
extraterrestrial life
: a being from another world : an extraterrestrial being
Examples of extraterrestrial in a Sentence
Recent Examples on the Web
Luis Parrales, The Atlantic, 18 June 2026
The committee that came up with the new guidelines further acknowledged that many technosignatures beyond radio transmissions can now be detected as evidence of extraterrestrial life.
—Eric Lagatta, USA Today, 15 June 2026
Patrick Ryan, USA Today, 13 June 2026
The technologies and biology of the extraterrestrials are left largely unexplained, with the plot focusing less on those details and more on how humanity reacts to their existence.
—Jack Smart, PEOPLE, 12 June 2026
See All Example Sentences for extraterrestrial
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Adjective
Theologians have gone so far as to wonder how Catholic teaching would apply to hypothetical extraterrestrial life.
—Luis Parrales, The Atlantic, 18 June 2026
The committee that came up with the new guidelines further acknowledged that many technosignatures beyond radio transmissions can now be detected as evidence of extraterrestrial life.
—Eric Lagatta, USA Today, 15 June 2026
Noun
The extraterrestrials wiped Daniel and Margaret’s memories of that night, knowing that when the aliens someday returned, the pair would be able to relay their otherworldly messages to the citizens of Earth.
—Patrick Ryan, USA Today, 13 June 2026
The technologies and biology of the extraterrestrials are left largely unexplained, with the plot focusing less on those details and more on how humanity reacts to their existence.
—Jack Smart, PEOPLE, 12 June 2026
See All Example Sentences for extraterrestrial
Cite this Entry
“Extraterrestrial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extraterrestrial. Accessed 21 Jun. 2026.
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