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antihelium

American  
[an-tee-hee-lee-uhm, an-tahy-] / ˌæn tiˈhi li əm, ˌæn taɪ- /

noun

Physics.

  1. the antimatter counterpart to helium.

antihelium Scientific  
/ ăn′tē-hē′lē-əm,ăn′tī- /

  1. The antimatter that corresponds to helium.

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.