[ dahy-as-ter ]
/ daɪˈæs tər /

noun Cell Biology.

the stage in mitosis at which the chromosomes, after their division and separation, are grouped near the poles of the spindle.

Origin of diaster

First recorded in 1880–85; di-1 + -aster2

Related forms

di·as·tral, adjective
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Examples from the Web for diaster

British Dictionary definitions for diaster


/ (daɪˈæstə) /


cytology rare the stage in cell division at which the chromosomes are in two groups at the poles of the spindle before forming daughter nuclei

Derived Forms

diastral, adjective

Word Origin for diaster

C19: from di- 1 + Greek astēr star
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for diaster


[ dī-ăstər ]


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.