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antiworld

[an-tee-wurld, an-tahy-]
noun
  1. Often anti-worlds. Physics. a hypothetical world composed of antimatter.
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Origin of antiworld

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for antiworld

antiworld

noun
  1. a hypothetical or supposed world or universe composed of antimatter
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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