muonium

noun
mu·​on·​ium | \myü-ˈō-nē-əm, -ˈä- \

Definition of muonium 

: a short-lived quasi-atom consisting of an electron and a positive muon

First Known Use of muonium

1957, in the meaning defined above

History and Etymology for muonium

New Latin

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Dictionary Entries near muonium

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Time Traveler for muonium

The first known use of muonium was in 1957

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Britannica.com: Encyclopedia article about muonium

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