centriole (plural centrioles)
- (biology) A barrel-shaped microtubule structure found in most animal cells, important in the process of mitosis (nuclear division).
1895, Edmund B. Wilson, “Archoplasm, centrosome, and chromatin in the sea-urchin egg”, in Journal of Morphology, volume 11, number 1:
- The aster is at this period closely similar to those of Ascaris at certain periods, as figured by Boveri, and the red mass with its central group of granules corresponds exactly, I think, to Boveri's "centrosome" with its "Centralkorn" or "centriole" ("centrosphere" with its "centrosome" in Strasburger's terminology).
barrel shaped microtubule