adj. (Biol.) pertaining to the centromere, the dense specialized portion of a chromosome to which the spindle attaches during mitosis. [ WordNet 1.5 ]
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 ]
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 ]