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nucleus noun
Meaning : A part of the cell containing DNA and RNA and responsible for growth and reproduction.
Synonyms : cell nucleus, karyon
Meaning : The positively charged dense center of an atom.
Meaning : A small group of indispensable persons or things.
Example :
Five periodicals make up the core of their publishing program.
Synonyms : core, core group
Meaning : (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.
Meaning : Any histologically identifiable mass of neural cell bodies in the brain or spinal cord.
Meaning : The central structure of the lens that is surrounded by the cortex.
Synonyms : lens nucleus
