deep-space

deep space

noun
space beyond the limits of the solar system.
Also called outer space.


Origin:
1950–55

deep-space, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
deep space
 
n
any region of outer space beyond the system of the earth and moon

Collins English Dictionary - Complete & Unabridged 10th Edition
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