nucleole

/ˈnukliˌoʊl/
noun
  1. A less common term for nucleolus; a small, dense structure inside the cell nucleus that produces ribosomal RNA.
    • The nucleole is visible under a light microscope as a dark spot in the nucleus.
    • Cells that make a lot of protein have a large nucleole.
    • The textbook used 'nucleole' instead of the more common 'nucleolus'.
Synonyms
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