/myooh oh"nee euhm/, n. 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.
* * *short-lived quasi-atom composed of a positive muon (an antiparticle), as nucleus, and an ordinary negative electron. It is formed when a positive muon captures an atomic electron after being slowed down in matter. Muoniums form a few compounds with gases such as nitrogen dioxide and ethylene. Muonium research throws some light on the puzzling nature of muons (essentially heavy electrons) and their relation to ordinary electrons.
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muonium — [mɥɔnjɔm] n. m. ÉTYM. V. 1965; de muon. ❖ ♦ Phys. Système lié constitué par un proton et un muon négatif … Encyclopédie Universelle
Muonium — For atoms where muons have replaced one or more electrons, see muonic atom. Muonium is an exotic atom made up of an antimuon and an electron, which was discovered in 1960 and is given the chemical symbol Mu. During the muon s 2 µs… … Wikipedia
Muonium — Le muonium est un atome exotique formé d un muon μ+ lié à un électron e , à l instar d un atome d hydrogène. Sa durée de vie est d environ 2,2 µs, pendant lesquelles il se comporte comme un élément chimique aux propriétés voisines de celles… … Wikipédia en Français
muonium — noun Etymology: New Latin Date: 1957 a short lived quasi atom consisting of an electron and a positive muon … New Collegiate Dictionary
muonium — noun an exotic atom formed when a positively charged muon (an anti muon) and an electron are bound by their mutual electrical attraction; chemically equivalent to a light, short lived isotope of hydrogen … Wiktionary
muonium — mu·on·ium … English syllables
muonium — m(y)üˈōnēəm, ˈän noun ( s) Etymology: New Latin, from International Scientific Vocabulary muon + New Latin ium : a short lived quasi atom consisting of an electron and a positive muon … Useful english dictionary
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