[ an-tee-hee-lee-uhm, an-tahy- ]
/ ˌæn tiˈhi li əm, ˌæn taɪ- /
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the antimatter counterpart to helium.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Scientific definitions for antihelium
[ ăn′tē-hē′lē-əm, ăn′tī- ]
The antimatter that corresponds to helium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.