interplanetary Hear it!

interplanetary definition

inter·plan·etary (in′tər plan′ə ter′ē)

adjective

  1. between planets
  2. within the solar system but outside the atmosphere of any planet or the sun

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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