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Related to antineutron: antiproton, antiquark


 (ăn′tē-no͞o′trŏn′, -nyo͞o′-, ăn′tī-)
The antiparticle of the neutron.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Atomic Physics) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌæn tiˈnu trɒn, -ˈnyu-, ˌæn taɪ-)

the antiparticle of the neutron, having zero charge and the same mass and spin of a neutron but with an opposite magnetic moment.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antineutron - the antiparticle of a neutron
nucleon - a constituent (proton or neutron) of an atomic nucleus
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The fact that the neutron had a magnetic moment, incidentally, showed that such a thing as an antineutron could exist, which would have a magnetic field pointed in the direction opposite to that of the neutron.
The new antinucleus, discovered at RHIC's STAR detector, is a negatively charged state of antimatter containing an antiproton, an antineutron, and an anti-Lambda particle.
One would be the neutron, of course, but the other, as was shown in 1956, would have to be an antineutron.
Each antimatter atom has antielectrons (positrons), antiprotons, and antineutrons, except the antiatom of ordinary hydrogen which has no antineutron.
In order to prove this, scientists are working to detect "neutrinoless double-beta decay" - a situation in which natural decay of Tellurium dioxide crystals results in neutrinos giving away photons, electrons, and antineutrons. In this case, if the particle really acts as its own antimatter, the antineutrinos will cancel each other out and make up a "neutrinoless" decay, with only 2.5 megaelectronvolts of energy spike, which is less than a thousandth of a billionth of a joule.
The study provides insight into the structure of antimatter nuclei, which consist of bound antiprotons and antineutrons. It also adds to the tally of papers finding no differences in the behavior of antimatter and ordinary matter.
For example, an atom of unmatter is formed either by electrons, protons, and antineutrons, or by antielectrons, antiprotons, and neutrons.
"[T]here should exist antiprotons and antineutrons as well as antielectrons, which are still called by their original name of positrons....
"Like the protons and neutrons - the particles making up the nucleus of an atom - every particle has what's called an antiparticle, things like antiprotons or antineutrons.