diaster Biol.
(daɪˈæstə(r))
Also dy-.
[mod. f. Gr. δι-, di-2 twice + ἀστήρ star.]
The double star of chromatin filaments which forms the penultimate stage in the division of a single cell-nucleus into two.
| 1882 J. T. Cunningham in Jrnl. Microsc. Soc. Jan. 43 The threads travel towards the poles, forming a dyaster (note, This term I take from Klein in his Atlas of Histology, 1880). 1885 E. R. Lankester in Encycl. Brit. XIX. 833 A polar star is seen at each end of the nucleus-spindle, and is not to be confused with the diaster. |
Hence diˈastral a.
| 1894 Athenæum 24 Nov. 719/3 As to the spindle fibres..during the diastral stage of the division they [etc.]. |