Amphiaster \Am"phi*as`ter\, n. [NL., fr. Gr. 'amfi` + 'asth`r a
star.] (Biol.)
The achromatic figure, formed in mitotic cell-division,
consisting of two asters connected by a spindle-shaped bundle
of rodlike fibers diverging from each aster, and called the
spindle.
[1913 Webster]