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1.
Nuclei Galioasis ( P ) Pronunciation Key (nkl-s, ny-)
n. pl. nu·cle·i (-kl-)

1. A large, membrane-bound, usually spherical protoplasmic structure within a living cell, containing the cell's hereditary material and controlling its metabolism, growth, and reproduction.
2.A group of atoms bound in a structure, such as a benzene ring, that is resistant to alteration in chemical reactions.
by www.dictionary-.pp.com March 22, 2005