flat universe

If there is just enough matter in the universe for its gravitational force to bring the expansion associated with the big bang to a stop in an infinitely long time, the universe is said to be flat. The flat universe is the dividing line between an open universe and a closed universe.


Nearby words

  1. flat spot,
  2. flat tax,
  3. flat tire,
  4. flat top,
  5. flat tuning,
  6. flat wart,
  7. flat white,
  8. flat-bed lorry,
  9. flat-bed plotter,
  10. flat-bed press

Note

Most theorists believe that the universe is flat.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.