noun Cell Biology.

  1. a small region near the nucleus in the cell cytoplasm, containing the centrioles.


  1. a small body in a cell where microtubules are produced. In animal cells it surrounds the centrioleAlso called: centrosphere

1889, from German centrosoma (1888), coined by German zoologist Theodor Boveri (1862-1915), from centro- (see center (n.)) + -some (3)).


  1. A small region of cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules.cytocentrum microcentrum

  1. A specialized region of the cytoplasm that is located next to the nucleus of a cell and contains the centrioles. The cells of most eukaryotes except plants have centrosomes.

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