amphiaster

noun Cell Biology.

1. the achromatic spindle with two asters that forms during mitosis.

noun

1. cytology the structure that occurs in a cell undergoing mitosis, consisting of a spindle with an aster at each end

n.

1. A double-star figure present in the cell during mitosis, consisting of two astrospheres connected by a spindle, formed just before the division of the nucleus.diaster