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
Hannah Millington, MSNBC Newsweek, 26 Nov. 2025
Because on Earth, there is virtually life wherever there is water, this has raised the hope that such hidden oceans may be the best sites in our solar system to look for extraterrestrial life.
—Charles Q. Choi, Space.com, 25 Nov. 2025
Gabriela Radulescu, The Conversation, 4 Nov. 2025
The following ghosts, monsters, and extraterrestrials just may haunt your dreams.
—Josh Honeycutt, Outdoor Life, 30 Oct. 2025
See All Example Sentences for extraterrestrial
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Adjective
These could be the best places in our solar system to look for extraterrestrial life, according to the researchers looking inside icy moons.
—Hannah Millington, MSNBC Newsweek, 26 Nov. 2025
Because on Earth, there is virtually life wherever there is water, this has raised the hope that such hidden oceans may be the best sites in our solar system to look for extraterrestrial life.
—Charles Q. Choi, Space.com, 25 Nov. 2025
Noun
The Soviet Union wanted to depict its technological might and wasn’t expecting to communicate with extraterrestrials.
—Gabriela Radulescu, The Conversation, 4 Nov. 2025
The following ghosts, monsters, and extraterrestrials just may haunt your dreams.
—Josh Honeycutt, Outdoor Life, 30 Oct. 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 30 Nov. 2025.
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