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
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Julia Jacobo, ABC News, 9 June 2025
With ‘Waltz into Space’, the Wiener Symphoniker are performing for a potentially extraterrestrial audience for the first time.
—David Szondy
may 25, New Atlas, 25 May 2025
Joey Nolfi Published, EW.com, 12 May 2025
Search for extraterrestrials: Could alien life thrive on K2-18b?
—Eric Lagatta, USA Today, 23 Apr. 2025
See All Example Sentences for extraterrestrial
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Adjective
Studying non-human intelligence can aid in the search for extraterrestrial life, the researchers said.
—Julia Jacobo, ABC News, 9 June 2025
With ‘Waltz into Space’, the Wiener Symphoniker are performing for a potentially extraterrestrial audience for the first time.
—David Szondy
may 25, New Atlas, 25 May 2025
Noun
In September 2023, during a serious investigation into alien bodies, Goldberg actually got up from the Hot Topics table to approach a large screen displaying what appeared to be a deceased extraterrestrial.
—Joey Nolfi Published, EW.com, 12 May 2025
Search for extraterrestrials: Could alien life thrive on K2-18b?
—Eric Lagatta, USA Today, 23 Apr. 2025
See All Example Sentences for extraterrestrial
Cite this Entry
“Extraterrestrial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extraterrestrial. Accessed 18 Jun. 2025.
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