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muon

[ myoo-on ]
/ ˈmyu ɒn /
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noun 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
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Origin of muon

1950–55; by shortening of mu meson; see mu, -on1

OTHER WORDS FROM muon

mu·on·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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British Dictionary definitions for muon

muon
/ (ˈmjuːɒn) /

noun
a positive or negative elementary particle with a mass 207 times that of an electron and spin 1/2 . It was originally called the mu meson but is now classified as a lepton

Derived forms of muon

muonic (mjuːˈɒnɪk), adjective

Word Origin for muon

C20: short for mu meson
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for muon

muon
[ myōōŏn′ ]

An elementary particle in the lepton family having a mass 209 times that of the electron, a negative electric charge, and a mean lifetime of 2.2 X 10-6 seconds. The muon was originally called the mu-meson and was once thought to be a meson. See Table at subatomic particle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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