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neutron number

noun, Physics.
the number of neutrons in the nucleus of an atom, equal to the mass number minus the atomic number of the atom. Symbol: N.
Origin of neutron number
1950-55 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for neutron number
  • The nuclear structure group studies the structural evolution of the atomic nucleus as a function of proton and neutron number.
British Dictionary definitions for neutron number

neutron number

the number of neutrons in the nucleus of an atom N
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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