the number of neutrons in the nucleus of an atom, equal to the mass number minus the atomic number of the atom. Symbol: N
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Origin of neutron number
First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for neutron number
the number of neutrons in the nucleus of an atomSymbol: N
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