1. Cell Biology. the protoplasm around a centrosome; the central portion of an aster, containing the centrosome.
  2. Also called barysphere. Geology. the central or interior portion of the earth.

Origin of centrosphere

First recorded in 1895–1900; centro- + -sphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for centrosphere

Historical Examples of centrosphere

British Dictionary definitions for centrosphere


  1. a former name for core (def. 4)
  2. another name for centrosome
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

centrosphere in Medicine


  1. The mass of cytoplasm surrounding the centriole in a centrosome.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.