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inflationary universe

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noun Astronomy.
  1. a version of the big bang theory in which the universe underwent very rapid growth during the first fraction of a second before it settled down to its current rate of expansion.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for inflationary universe

inflationary universe

noun
  1. a variation of the cosmological big-bang theory in which the early stage of the evolution of the universe is postulated to include a period of accelerated expansion
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

inflationary universe in Culture

inflationary universe

A period early in the big bang during which the universal expansion proceeded at a much more rapid rate that it did before or since. Cosmologists believe that most of the matter in the universe was created during the period of inflation.

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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.