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
Sharmila Kuthunur, Space.com, 3 Dec. 2025
Psychedelic communions with extraterrestrial ghosts drive home that knowledge.
—PC Magazine, 2 Dec. 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
Furukawa's team also discovered glucose, the primary fuel source for modern life, marking the first time this sugar has been identified in an extraterrestrial sample.
—Sharmila Kuthunur, Space.com, 3 Dec. 2025
Psychedelic communions with extraterrestrial ghosts drive home that knowledge.
—PC Magazine, 2 Dec. 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 14 Dec. 2025.
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