1. intergalactic space the space between galaxies
  2. intergalactic existing or occuring between collections of star systems
  3. interplanetary space the part of outer space within the solar system
  4. eclectic selecting what seems best of various styles or ideas
  5. intercollegiate used of competition between colleges or universities
  6. extragalactic nebula a collection of star systems
  7. interstellar space the space between stars
  8. intractable difficult to manage or mold
  9. intercalate insert (days) in a calendar
  10. Antarctic Zone the region around the south pole: Antarctica and surrounding waters
  11. interest expense interest paid on loans
  12. interconnectedness a state of being connected reciprocally
  13. Antarctic Ocean the southern waters surrounding Antarctica
  14. extragalactic outside or beyond a galaxy
  15. interactive capable of influencing each other
  16. winter crookneck squash any of various plants bearing squash having hard rinds and elongated recurved necks
  17. winter solstice December 22, when the sun is at its southernmost point
  18. interscholastic used of competition or cooperation between secondary schools
  19. interlocutor a person who takes part in a conversation
  20. interpolate insert words into texts, often falsifying it thereby