neutrons
Use Neutrons in a sentence
trɒn, ˈnyu- noun Physics.
an elementary particle having no charge, mass slightly greater than that of a proton, and spin of ½: a constituent of the nuclei of all atoms except those of hydrogen. Symbol: n
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To neutrons
Collins
World English Dictionary
neutron (ˈnjuːtrɒn) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| physics a neutral elementary particle with a rest mass of 1.674 92716 × 10--27 kilogram and spin ½; classified as a baryon. In the nucleus of an atom it is stable, but when free it decays | |
| [C20: from | |
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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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Neutrons
is always a great word to know.
So is zedonk. Does it mean:
| the offspring of a zebra and a donkey. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
Etymonline
Word Origin & History
neutron
1921, coined by W.D. Harkins of Chicago from neutr(al) + -on, as in electron. First record of neutron bomb is from 1960.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
neutron neu·tron (n&oomacr;'trŏn', ny&oomacr;'-)
n.
An electrically neutral subatomic particle in the baryon family, having a mass 1,839 times that of the electron, stable when bound in an atomic nucleus, and having a mean lifetime of approximately 1.0×103 seconds as a free particle. It and the proton form nearly the entire mass of atomic nuclei.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
neutron  (n 'trŏn') Pronunciation Key
An electrically neutral subatomic particle in the baryon family, having a mass of 1.674 × 10-24 grams (1,838 times that of the electron and slightly greater than that of the proton). Neutrons are part of the nucleus of all atoms, except hydrogen, and have a mean lifetime of approximately 1.0×103 seconds as free particles. They consist of a triplet of quarks, including two down quarks and one up quark, bound together by gluons. In radioactive atoms, excess neutrons are converted to protons by beta decay. Beams of neutrons from nuclear reactors are used to bombard the atoms of various elements to produce fission and other nuclear reactions and to determine the atomic arrangements in molecules. See Table at subatomic particle. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
As the universe expanded and cooled, some of these particles merged to form neutrons and protons.
The atomic bomb released two types of radiation, easily-detectable gamma rays and fast neutrons, which are harder to measure.
Quarks are the elementary building blocks of positively charged protons and neutral neutrons, which make up atomic cores.
So the experiment also picks up cosmic radiation, thermal neutrons and background radioactivity.
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