'Diaster' definitions:

Definition of 'Diaster'

From: GCIDE

Diaster \Di*as"ter\, n. [Gr. di- = di`s- twice + ? star.] (Biol.) A double star; -- applied to the nucleus of a cell, when, during cell division, the loops of the nuclear network separate into two groups, preparatory to the formation of two daughter nuclei. See Karyokinesis. [1913 Webster]