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antigalaxy

American  
[an-tee-gal-uhk-see, an-tahy-] / ˈæn tiˌgæl ək si, ˈæn taɪ- /

noun

plural

antigalaxies

  1. a galaxy consisting of antimatter.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.