[ an-tee-hee-lee-uh m, an-tahy- ]
/ ˌæn tiˈhi li əm, ˌæn taɪ- /

noun Physics.

the antimatter counterpart to helium. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for antihelium


[ ăn′tē-hēlē-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.