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nucleic acid
nuclein
nucleo-
nucleocapsid
nucleoid
nucleolar
nucleolar organizer
nucleolus
nucleon
nucleon number
nucleonics
nucleophile
nucleoplasm
nucleoprotein
nucleoside
nucleosome
nucleosynthesis
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nucleon
nu·cle·on [ nklee òn ] (plural nu·cle·ons)


noun 
Definition:
 
proton or neutron: a proton or neutron, especially when part of an atomic nucleus
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