Definition of centrosome in US English:



  • An organelle near the nucleus of a cell which contains the centrioles (in animal cells) and from which the spindle fibers develop in cell division.

    • ‘A legacy of these ancient symbiotic interactions is that eukaryotic cells continue to show tight links between nuclei, centrosomes and microtubules in the form of Cell Bodies.’
    • ‘On one hand, angiosperm cells lack centrosomes as microtubule organizing centres and are missing the contractile ring which serves as a tool for cytokinesis in animal cells.’
    • ‘At metaphase, centrosomes initiate the bipolar microtubule spindle.’
    • ‘In most animal cells, the centrosome contains a pair of centrioles, which consist of an array of microtubules.’
    • ‘The astral microtubule arrays around the centrosomes, like the nuclei, are visible as areas that are largely devoid of yolk granules.’


Late 19th century: from Latin centrum (see center) + Greek sōma ‘body’.