nucleus Meaning in Cambridge Learner Dictionary
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Meaning of "nucleus" - Learner English Dictionary

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nucleus

noun [C]
 
 
/ˈnjuːkliəs/ ( plural nuclei /ˈnjuːkliaɪ/)
ATOM OR CELL the central part of an atom or cellCellsAtoms, molecules and sub-atomic particles
IMPORTANT PART the central or most important part of a group or idea: Senior coaches handpicked the nucleus of the team.Important and essential thingsInformation and messages
(Definition of nucleus from the Cambridge Learners Dictionary © Cambridge University Press)
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