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Definitions

alien

[eyl-yuhn, ey-lee-uhn] / ˈeɪl yən, ˈeɪ li ən /




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.

"Initially, I thought we must have sequenced some alien species. It's very rare for an active gene, which makes a protein, to not have a match."

From Science Daily • Mar. 26, 2026

Brazil’s UFO capital marks 30 years since alleged alien encounter.

From MarketWatch • Mar. 24, 2026

What begins in isolation turns into something closer to a buddy movie, as Grace ends up working with an alien he names Rocky, another traveler trying to solve the same problem.

From Los Angeles Times • Mar. 19, 2026

Spielberg, whose "E.T. the Extra-Terrestrial" remains one of cinema's defining alien stories, told the crowd he had believed since childhood that humanity was not alone in the universe.

From Barron's • Mar. 14, 2026

Today, Chin and I race to climb this really big rock at one end of the park, because that’s the best place to play alien schoolchildren.

From "Invisible Inkling" by Emily Jenkins