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Definition of "outer space" []

  • Any region of space beyond limits determined with reference to the boundaries of a celestial body or system, especially: (noun)
  • The region of space immediately beyond Earth's atmosphere. (noun)
  • Interplanetary or interstellar space. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "outer space" in a sentence
  • "Yet, according to the speedometer, they were still racing through outer space at well over eleven thousand miles per hour."
  • ""You know, Tom, the peace and quiet of outer space is going to come as a welcome relief after the goings on around here," Bud said to his pal as they stretched out in their beds."
  • "Thought came back from outer space and lodged again earthily in my brain."
Words like "outer space"