Dictionary

  Definition of nucleus
  1. a part of the cell containing DNA and RNA and responsible for growth and reproduction
  2. any histologically identifiable mass of neural cell bodies in the brain or spinal cord
  3. a small group of indispensable persons or things; "five periodicals make up the core of their publishing program"
  4. the positively charged dense center of an atom
  5. (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
Similar Words: cell nucleus, karyon, core, core group

 

Hyponyms: pronucleus, subthalamic nucleus, dentate nucleus, cadre

 

Part Meronyms: cell, atom, comet

 

Derivational Morphology: nucleate

 

 
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