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antihelium

noun
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an·​ti·​helium | \ " + \

Definition of antihelium

: the antimatter counterpart of helium

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First Known Use of antihelium

1963, in the meaning defined above

History and Etymology for antihelium

anti- entry 1 + helium

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The first known use of antihelium was in 1963

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Cite this Entry

“Antihelium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antihelium. Accessed 24 Feb. 2020.

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