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Definitions of nucleus
  1. noun
    a part of the cell containing DNA and RNA and responsible for growth and reproduction

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  2. noun
    a small group of indispensable persons or things

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    type of:
    set
  3. noun
    the central structure of the lens that is surrounded by the cortex

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  4. noun
    any histologically identifiable mass of neural cell bodies in the brain or spinal cord
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  5. noun
    (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
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  6. noun
    the positively charged dense center of an atom
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Definition that contains nucleus
  • cell a small unit serving as part of or as the nucleus of a larger political movement
  • dna (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
  • nuclear of or relating to or constituting the nucleus of a cell
  • nuclear of or relating to or constituting the nucleus of an atom
  • nuclear constituting or like a nucleus
  • coma (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
  • orbit the path of an electron around the nucleus of an atom
  • powell English physicist who discovered the pion (the first known meson) which is a subatomic particle involved in holding the nucleus together (1903-1969)
  • neutron an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
  • cortex the tissue that surrounds the lens nucleus
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