neutron number

noun, Physics.
1.
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
1950-55
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

noun
1.
the number of neutrons in the nucleus of an atom N