• synonyms


noun Cell Biology.
  1. the stage in mitosis at which the chromosomes, after their division and separation, are grouped near the poles of the spindle.
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Origin of diaster

First recorded in 1880–85; di-1 + -aster2
Related formsdi·as·tral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for diaster

Historical Examples

  • Chromosomes at the poles forming the Diaster, beginning splitting of the Cell-body.

    The Ethics of Medical Homicide and Mutilation

    Austin O'Malley

British Dictionary definitions for diaster


  1. 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
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Derived Formsdiastral, adjective

Word Origin

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

diaster in Medicine


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