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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.

See Examples For:

He was given the nod for launching the IceCube Neutrino Observatory in Antarctica and the discovery of high-energy neutrinos from outer space.

From Barron's ● Oct. 7, 2026

Space Force, the service of the armed forces that deals with this topic, has defined space control as efforts to “destroy, disrupt, or degrade” vital assets in outer space.

From Slate ● Sep. 17, 2026

It looks like a hairy alien from outer space.

From The Wall Street Journal ● Aug. 12, 2026

"Ductile intermetallics will significantly boost our capabilities for designing advanced materials for aerospace and outer space, energy and defense applications," Zhang said.

From Science Daily ● Jul. 31, 2026

The afternoon'd gone and the sky was turning to outer space when I noticed another kid on the lake.

From "Black Swan Green" by David Mitchell

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