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Synonyms

outer space

American  

noun

  1. space beyond the atmosphere of the earth.

  2. deep space.


outer space British  

noun

  1. (not in technical usage) any region of space beyond the atmosphere of the earth

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of outer space

First recorded in 1875–80

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.

The funding deficit hits the U.N. as it is saddled with ever more governance challenges, from artificial intelligence and biosecurity to ocean mining and outer space.

From The Wall Street Journal • May 30, 2026

Meta Platforms is the latest technology company to see outer space as a potential solution to the artificial-intelligence power crunch.

From MarketWatch • Apr. 27, 2026

The animated sequel from Universal and Illumination Studios tracks the adventures of Mario, Luigi and friends in outer space, where they must save Princess Rosalina.

From Barron's • Apr. 5, 2026

A makeshift window on the back wall opens onto what looks like a portal to outer space.

From Los Angeles Times • Apr. 1, 2026

It’s like Boy21’s giving me clues by making up stories about outer space.

From "Boy21" by Matthew Quick

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