• synonyms


noun Biology.
  1. the central portion of an aster, in which the centrosome lies.
  2. the whole aster exclusive of the centrosome.
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Origin of astrosphere

First recorded in 1895–1900; astro- + sphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for astrosphere


noun cytology
  1. another name for centrosome
  2. Also called: attraction sphere the part of the aster excluding the centrosome
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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

astrosphere in Medicine


  1. A set of radiating fibrils extending outward from the centrosome and centrosphere of a dividing cell.aster attraction sphere
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.