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antineutron

[an-tee-noo-tron, -nyoo-, an-tahy-] /ˌæn tiˈnu trɒn, -ˈnyu-, ˌæn taɪ-/
noun, Physics.
1.
an elementary particle having no charge and having a mass and spin equal to that of the neutron but with magnetic moment opposite to that of the neutron; the antiparticle of the neutron.
adjective
2.
Also, anti-neutron. opposing the building, stockpiling, or use of neutron bombs:
The antineutron lobby was outnumbered.
Origin of antineutron
1940-1945
1940-45; anti- + neutron
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for antineutron

antineutron

/ˌæntɪˈnjuːtrɒn/
noun
1.
the antiparticle of a neutron; a particle having the same mass as the neutron but a magnetic moment of opposite sign
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
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antineutron in Science
antineutron
  (ān'tē-n'trŏn', ān'tī-)   
The antiparticle that corresponds to the neutron.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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