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antineutron

[an-tee-noo-tron, -nyoo-, an-tahy-]

an·ti·neu·tron

[an-tee-noo-tron, -nyoo-, an-tahy-]
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, an·ti-neu·tron. opposing the building, stockpiling, or use of neutron bombs: The antineutron lobby was outnumbered.

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Antineutron is always a great word to know.
So is collision. Does it mean:
a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water
the meeting of particles or of bodies in which each exerts a force upon the other, causing the exchange of energy or momentum

Origin:
1940–45; anti- + neutron
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Collins
World English Dictionary
antineutron (ˌæntɪˈnjuːtrɒn)
 
n
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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
antineutron   (ān'tē-n'trŏn', ān'tī-)  Pronunciation Key 
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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Encyclopedia Britannica
Encyclopedia

antineutron

antiparticle of the ordinary neutron, first produced in 1956 at the Bevatron particle accelerator at the University of California, Berkeley, by passing an antiproton beam through matter. Antineutrons were created when antiprotons in the beam exchanged their negative charge with nearby protons, which have a positive charge. The antineutrons were detected through their annihilation reactions with neutrons and protons.

Learn more about antineutron with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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