mu-meson 1
noundomain: natural obj.
Princeton WordNet [ver.3.1]
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EnglishDefinition
an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino
Hypernym
lepton 2
noun
an elementary particle that participates in weak interactions; has a baryon number of 0
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