Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
Related to muon: muon neutrino


The negatively charged lepton that belongs to the second generation of elementary fermions and has a mass 207 times that of an electron and a mean lifetime of 2.2 × 10-6 second. Also called mu lepton.

[Earlier mu meson (from the use of the Greek letter mu, the equivalent of the Roman letter m of meson, to distinguish it from other mesons subsequently discovered, the class of particles to which it was formerly thought to belong).]

mu·on′ic adj.


(General Physics) a positive or negative elementary particle with a mass 207 times that of an electron and spin . It was originally called the mu meson but is now classified as a lepton
[C20: short for mu meson]
muonic adj


(ˈmyu ɒn)

an unstable lepton of mass approximately 207 times greater than the electron's mass.
[1950–55; shortening of earlier mu meson; see mu, mes-, -on1]
mu•on′ic, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.muon - an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino
lepton - an elementary particle that participates in weak interactions; has a baryon number of 0
References in periodicals archive ?
380 million and the other is for the upgradation of silicon strip tracker and Muon System for the Compact Muon Solenoid Experiment, Research and Development of Rs 275.
Sitting on the white tile floor in his home on the outskirts of Phnom Penh, 29-year-old Yan Muon switched back and forth between Khmer and English as he remembered four years spent working at an electronics factory in Malaysia.
Open competition: research, development and creation of components of a muon system for the modernization of a detector a compact muon solenoid at the cern large hadron collider in accordance with the requirements of the terms of reference
Although it does not rule out the existence of dark photons, the BaBar results do limit where they can hide, and definitively rule out their explanation for another intriguing mystery associated with the property of the subatomic particle known as the muon," Michael Roney, BaBar spokesperson and professor at the University of Victoria, Canada, said in the statement.
The large void has been detected with a high confidence by three different muon detection technologies and three independent analyses.
The presence of the void, dubbed the ScanPyramids Big Void, was confirmed using three different muon detection technologies over several months after first being spotted, the paper said.
To peer inside the pyramid, the scientists used an imaging technique called muon tomography that tracks particles that bombard Earth at close to the speed of light and penetrate deeply into solid objects.
Research on the emulsion film muon radiography technique was recently published in Geophysical Research Letters.
This was confirmed in 2013 [3] and has also been confirmed using a muon orbiting a deuterium nucleus [4].
Lingacom's technology is based on high-energy natural atmospheric cosmic ray muon particles, which have the highest known penetration levels on earth and are capable of penetrating and exiting all attenuating cargo and vehicles.
He took a shot at compact muon solenoid (CMS) which is a broadly useful identifier at the Large Hadron Collider.