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isotone

[ahy-suh-tohn] /ˈaɪ səˌtoʊn/
noun, Physics.
1.
one of two or more atoms having an equal number of neutrons but different atomic numbers.
Origin
1930-1935
1930-35; iso- + tone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for isotone

isotone

/ˈaɪsəˌtəʊn/
noun
1.
one of two or more atoms of different atomic number that contain the same number of neutrons
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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isotone in Medicine

isotone i·so·tone (ī'sə-tōn')
n.
One of two or more atoms whose nuclei have the same number of neutrons but different numbers of protons.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for isotone

any of two or more species of atoms or nuclei that have the same number of neutrons. Thus, chlorine-37 and potassium-39 are isotones, because the nucleus of this species of chlorine consists of 17 protons and 20 neutrons, whereas the nucleus of this species of potassium contains 19 protons and 20 neutrons.

Learn more about isotone with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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7
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