meson

[mee-zon, ‐son, mez-on, mes]
noun
Physics. any hadron, or strongly interacting particle, other than a baryon. Mesons are bosons, having spins of 0, 1, 2, …, and, unlike baryons, do not obey a conservation law.
Compare quark model.


Origin:
1935–40; mes- + on1; cf. mesotron

mesonic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To meson
Collins
World English Dictionary
meson (ˈmiːzɒn)
 
n
See also muon Former name: mesotron any of a group of elementary particles, such as a pion or kaon, that usually has a rest mass between those of an electron and a proton, and an integral spin. They are responsible for the force between nucleons in the atomic nucleus
 
[C20: from meso- + -on]
 
me'sonic
 
adj
 
'mesic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

meson
1939, from Gk. mesos "middle" (see medial). Earlier mesotron (1938), so called for being intermediate in mass between protons and electrons.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
meson   (měz'ŏn', měs'-, mē'zŏn', -sŏn')  Pronunciation Key 
Any of a family of subatomic particles that are composed of a quark and an antiquark. Their masses are generally intermediate between leptons and baryons, and they can have positive, negative, or neutral charge. Mesons form a subclass of hadrons and include the kaon, pion and J/psi particles. Mesons were originally believed to be the particles that mediated the strong nuclear force, but it has since been shown that the gluon mediates this force. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
meson [(mez-on, may-zon)]

An elementary particle in the atomic nucleus.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
Take one regular quark and add an antiquark and you'll get a meson.
Since it's pretty clearly not baryonic, maybe he's postulating some mysterious stable meson.
The neutrino turns into a mu-meson, the long center track.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature