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muonium

American

[myoo-oh-nee-uhm] / mjuˈoʊ ni əm /

noun

Physics.

an electron and a positively charged muon bound together by electrical attraction in the same manner as the electron and proton in a hydrogen atom.

Etymology

Origin of muonium

1955–60; mu(on) + -onium, probably extracted from positronium

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

muonium

"Thanks to this high-quality source, a great many muonium atoms can be produced."

From Science Daily ● Sep. 18, 2026

The team describes its new method for producing muonium in Nature Physics.

From Science Daily ● Sep. 18, 2026

When a positively charged antimuon combines with a negatively charged electron, the pair forms a neutral atom known as muonium.

From Science Daily ● Sep. 18, 2026

"We have managed to produce the muonium atoms in a 'cold' state, which is what makes the gravity experiment possible in the first place," says Soter.

From Science Daily ● Sep. 18, 2026

"The exotic muonium is very well suited to this because it is a neutral atom," explains Soter: "After all, to make something fall, you need something neutral."

From Science Daily ● Sep. 18, 2026

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023