heterochromatin

[het-er-uh-kroh-muh-tin]

noun Genetics.

the dense, highly stainable part of a chromosome.

Nearby words

  1. heterocarpy,
  2. heterocellular,
  3. heterocercal,
  4. heterochlamydeous,
  5. heterochromatic,
  6. heterochrome,
  7. heterochromia,
  8. heterochromic uveitis,
  9. heterochromosome,
  10. heterochromous

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. 2019


British Dictionary definitions for heterochromatin

heterochromatin

noun

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

Medicine definitions for heterochromatin

heterochromatin

[hĕt′ə-rō-krōmə-tĭn]

n.

The part of the chromonema that remains tightly coiled and condensed during interphase and thus stains readily.

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