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Meaning of nucleus


1 definition found

From WordNet (r) 3.0 (2006) [wn]:

  nucleus
      n 1: a part of the cell containing DNA and RNA and responsible
           for growth and reproduction [syn: {nucleus}, {cell
           nucleus}, {karyon}]
      2: the positively charged dense center of an atom
      3: a small group of indispensable persons or things; "five
         periodicals make up the core of their publishing program"
         [syn: {core}, {nucleus}, {core group}]
      4: (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
      5: any histologically identifiable mass of neural cell bodies in
         the brain or spinal cord
      6: the central structure of the lens that is surrounded by the
         cortex [syn: {lens nucleus}, {nucleus}]


WordNet ® Princeton University. http://wordnet.princeton.edu

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