noun Cell Biology.
- a small region near the nucleus in the cell cytoplasm, containing the centrioles.
- a small body in a cell where microtubules are produced. In animal cells it surrounds the centrioleAlso called: centrosphere
- A small region of cytoplasm adjacent to the nucleus that contains the centrioles and serves to organize microtubules.cytocentrum microcentrum
- 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.