nucleon number

from WordNet (r) 3.0 (2006)

nucleon number
    n 1: the sum of the number of neutrons and protons in an atomic
         nucleus [syn: {mass number}, {nucleon number}]

from The Collaborative International Dictionary of English v.0.48

nucleon number \nucleon number\ n.
   The sum of the number of neutrons and protons in an atomic
   nucleus.

   Syn: mass number.
        [WordNet 1.5 +PJC]

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