(n)a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape, Syn.kinetochore
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
n. (Biol.) a specialized condensed region of a chromosomes that appears during mitosis where the chromatids are held together to form an X shape. [ WordNet 1.5 ]