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See more synonyms for amphiaster on Thesaurus.com
noun Cell Biology.
  1. the achromatic spindle with two asters that forms during mitosis.
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Origin of amphiaster

First recorded in 1880–85; amphi- + -aster2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for amphiaster

Historical Examples

  • While these changes are going on in the chromatin the Amphiaster forms.

    The Ethics of Medical Homicide and Mutilation

    Austin O'Malley

  • As the amphiaster grows the centrosomes are grouped in a plane at the equator of the spindle, forming the Equatorial Plate.

British Dictionary definitions for amphiaster


  1. cytology the structure that occurs in a cell undergoing mitosis, consisting of a spindle with an aster at each end
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Word Origin

C19: from amphi- + New Latin aster; see aster
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

amphiaster in Medicine


  1. A double-star figure present in the cell during mitosis, consisting of two astrospheres connected by a spindle, formed just before the division of the nucleus.diaster
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.