• synonyms


See more synonyms for heterochromatin on Thesaurus.com
noun Genetics.
  1. the dense, highly stainable part of a chromosome.
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Compare euchromatin.

Origin of heterochromatin

First recorded in 1930–35; hetero- + chromatin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for heterochromatin


  1. the condensed part of a chromosome that stains strongly with basic dyes in nondividing cells and has little genetic activityCompare euchromatin
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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

heterochromatin in Medicine


  1. The part of the chromonema that remains tightly coiled and condensed during interphase and thus stains readily.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.