combining form denoting centre. Example: centrilobular (in the centre of a lobule (especially of the liver).
n. a small particle found in the cytoplasm of cells, near the nucleus. Centrioles are involved in the formation of the *spindle and aster during cell division. During interphase there are usually two centrioles in the *centrosome; when cell division occurs these separate and move to opposite sides of the nucleus, and the spindle is formed between them.... centriole