n. [ Ento- + -mere. ] (Biol.) The more granular cells, which finally become internal, in many segmenting ova, as those of mammals.
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 ]