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antihelium

[an-tee-hee-lee-uh m, an-tahy-] /ˌæn tiˈhi li əm, ˌæn taɪ-/
noun, Physics.
1.
the antimatter counterpart to helium.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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antihelium in Science
antihelium
  (ān'tē-hē'lē-əm, ān'tī-)   
The antimatter that corresponds to helium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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