follow Dictionary.com

Get the details behind our redesign

meson

[mee-zon, ‐son, mez-on, mes‐] /ˈmi zɒn, ‐sɒn, ˈmɛz ɒn, ˈmɛs‐/
noun
1.
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
1935-1940
1935-40; mes- + on1; cf. mesotron
Related forms
mesonic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for mesonic

meson

/ˈmiːzɒn/
noun
1.
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 Former name mesotron See also muon
Derived Forms
mesonic, mesic, adjective
Word Origin
C20: from meso- + -on
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
Cite This Source
Word Origin and History for mesonic
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
mesonic in Science
meson
  (měz'ŏn', měs'-, mē'zŏn', -sŏn')   
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
mesonic in Culture
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

Word of The Day

Difficulty index for meson

Most English speakers likely know this word

Word Value for mesonic

11
14
Scrabble Words With Friends