Longman Dictionary of Contemporary English homepage

Topic: BIOLOGY

Date: 1700-1800
Language: Latin
Origin: 'center of a nut', from nux 'nut'

nucleus

noun
     
nu‧cle‧us plural nuclei [countable]
1HPHC the central part of an atom, made up of neutrons, protons, and other elementary particles
2HB the central part of almost all the cells of living things
3 a small, important group at the centre of a larger group or organization
nucleus of
the nucleus of an effective team
Marantz and Grohl form the nucleus of the Atlanta operation.
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