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
ABC News, 4 Apr. 2026
Maurer imagines blending the fungi with Martian or lunar dirt; their sticky mycelia would cement it into an extraterrestrial equivalent of particle board.
—Big Think, 31 Mar. 2026
ABC News, 4 Apr. 2026
There's a time and place for everything, including an extraterrestrial who wants to take over Earth.
—Sergio Pereira, Space.com, 30 Mar. 2026
See All Example Sentences for extraterrestrial
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Adjective
However, that review gave no indications that their origins were extraterrestrial.
—ABC News, 4 Apr. 2026
Maurer imagines blending the fungi with Martian or lunar dirt; their sticky mycelia would cement it into an extraterrestrial equivalent of particle board.
—Big Think, 31 Mar. 2026
Noun
Loeb, director of the Institute for Theory & Computation at Harvard and head of the university's Galileo Project for the Systematic Scientific Search for Evidence of Extraterrestrial Technological Artifacts, believes in the likely existence of extraterrestrials.
—ABC News, 4 Apr. 2026
There's a time and place for everything, including an extraterrestrial who wants to take over Earth.
—Sergio Pereira, Space.com, 30 Mar. 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 6 Apr. 2026.
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