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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.

Part of SpaceX’s recent AI strategy is a shift toward building data centers in outer space, where solar power is abundant and, Musk says, will eventually be cheaper than operating on Earth.

From The Wall Street Journal • Mar. 28, 2026

Despite my penchant for outer space films and my affinity for Gosling’s work, the millennial cringe of it all left a bitter taste in my mouth.

From Salon • Mar. 21, 2026

"In 10 years, nearly all new data centers will be being built in outer space," predicted Starcloud co-founder and chief Philip Johnston.

From Barron's • Mar. 17, 2026

“When you think of outer space, you instantly think of stars and planets,” Storer says.

From Los Angeles Times • Mar. 6, 2026

We studied the lines, angles, orbits, and shapes of outer space.

From "Reaching for the Moon" by Katherine Johnson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.