extraterrestrial
adjective
outside, or originating outside, the limits of the earth.
extraterrestrials
-
pluralof extraterrestrial.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Although there is speculation about the origins of the civilization—the notion that it might have been established by extraterrestrials remains widespread in China—experts’ understanding of how its people lived has grown, particularly after Ran’s discoveries.
From The Wall Street Journal ● Aug. 8, 2026
At the end of Season 1, their cover being blown, and humans being famously weird when it comes to extraterrestrials — you’ve seen the movies — they return home en masse, except for Sugar.
From Los Angeles Times ● Jun. 19, 2026
In a follow-up post on Instagram, Obama, who served as US president between 2009-17, clarified: "I saw no evidence during my presidency that extraterrestrials have made contact with us. Really!"
From BBC ● Feb. 19, 2026
In science-fiction scenarios of first contact with extraterrestrials, humans usually bootstrap a common language with mathematics, demonstrating that we know the digits of pi and so forth.
From The Wall Street Journal ● Jan. 9, 2026
If the extraterrestrials stay at home, there are at least two ways in which they might find out about us.
From "Cosmos" by Carl Sagan
