Meaning of nucleus

Definition of nucleus

(noun) a part of the cell containing DNA and RNA and responsible for growth and reproduction
a small group of indispensable persons or things; "five periodicals make up the core of their publishing program"
(astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail
the central structure of the lens that is surrounded by the cortex

Other information on nucleus

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