DEFINITIONS
The
2019 WORD
OF THE YEAR is...

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.

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Words nearby flat universe

flat spot, flat tax, flat tire, flat top, flat tuning, flat universe, flat wart, flat white, flat-bed lorry, flat-bed plotter, flat-bed press

notes for flat universe

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.