antihelium

[an-tee-hee-lee-uh m, an-tahy-]
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antihelium in Science

antihelium

[ăn′tē-hēlē-əm, ăn′tī-]
  1. The antimatter that corresponds to helium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.