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muon

[myoo-on]
See more synonyms for muon on Thesaurus.com
noun Physics.
  1. 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
Related formsmu·on·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for muon

Historical Examples

  • That is, if the muon did not exist, what effect would this have on the structure of matter?

    LRL Accelerators

    Lawrence Radiation Laboratory

  • The behavior of the muon is well understood, but its role as one of the elementary particles is unknown.

    LRL Accelerators

    Lawrence Radiation Laboratory

  • The muon is unstable, eventually undergoing a radioactive decay into an electron.

    LRL Accelerators

    Lawrence Radiation Laboratory

  • Although the muon does not experience nuclear forces, it can interact weakly with nuclei.

    LRL Accelerators

    Lawrence Radiation Laboratory


British Dictionary definitions for muon

muon

noun
  1. 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
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Derived Formsmuonic (mjuːˈɒnɪk), adjective

Word Origin

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

muon in Science

muon

[myōōŏn′]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.