from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The regions beyond the gravitational influence of Earth encompassing interplanetary, interstellar, and intergalactic space.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. All of space beyond the gravitational influence of Earth, or outside the Solar System

from the GNU version of the Collaborative International Dictionary of English

  • n. the part of outer space which is beyond the limits of the solar system.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any region in space outside the solar system


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