(in physics and cosmology) a hypothetical collection of identical or diverse universes, including our own.

Origin of multiverse

First recorded in 1895–1900; multi- + (uni)verse Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for multiverse

Contemporary Examples of multiverse

Historical Examples of multiverse

  • It is neither a universe pure and simple nor a multiverse pure and simple.


    William James

British Dictionary definitions for multiverse



astronomy the aggregate of all existing matter, of which the universe is but a tiny fragment
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

Word Origin and History for multiverse

1895, William James's coinage, an alternative to universe meant to convey absence of order and unity.

But those times are past; and we of the nineteenth century, with our evolutionary theories and our mechanical philosophies, already know nature too impartially and too well to worship unreservedly any god of whose character she can be an adequate expression. Truly all we know of good and beauty proceeds from nature, but none the less so all we know of evil. Visible nature is all plasticity and indifference, a moral multiverse, as one might call it, and not a moral universe. [William James, "Is Life Worth Living?" address to the Young Men's Christian Association of Harvard University, May 1895]
Online Etymology Dictionary, © 2010 Douglas Harper