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nucleocapsid
nucleoid
nucleolar
nucleolar organizer
nucleolus
nucleon
nucleon number
nucleonics
nucleophile
nucleoplasm
nucleoprotein
nucleoside
nucleosome
nucleosynthesis
nucleotide
nucleotide base
nucleus
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nucleophile
nu·cle·o·phile [ nklee ə fl ] (plural nu·cle·o·philes)


noun 
Definition:
 
electron donor: a substance that becomes an electron donor in bonding during a chemical reaction

nu·cle·o·phil·ic [ nklee ə fíllik ] adjective
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