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Dictionary

mu•on

Pronunciation: (myOO'on), [key]
—n. Physics.
a lepton similar in most respects to the electron except that it is unstable, it may be positively charged, and its mass is approximately 207 times greater; the positively charged muon is the antiparticle of the negatively charged muon. Symbol: μ

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

muny

muonium

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