'nucleon number' definitions:

Definition of 'nucleon number'

(from WordNet)
noun
The sum of the number of neutrons and protons in an atomic nucleus [syn: mass number, nucleon number]

Definition of 'nucleon number'

From: GCIDE
  • 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]