noun Cell Biology.

the readily stainable substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division.

Nearby words

  1. chromaticity coordinates,
  2. chromaticity diagram,
  3. chromaticness,
  4. chromatics,
  5. chromatid,
  6. chromatin body,
  7. chromatism,
  8. chromatist,
  9. chromato-,
  10. chromatogenous

Origin of chromatin

First recorded in 1880–85; chromat- + -in2

Related formschro·ma·tin·ic, adjectivechro·ma·toid, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for chromatin

British Dictionary definitions for chromatin



cytology the part of the nucleus that consists of DNA and proteins, forms the chromosomes, and stains with basic dyesSee also euchromatin, heterochromatin
Derived Formschromatinic, adjectivechromatoid, adjective

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

Word Origin and History for chromatin



protoplasm in cell nuclei, 1882, from German, coined 1879 by German anatomist Walther Flemming (1843-1905), from Latinized form of Greek khromat-, the correct combinational form of khroma "color" (see chroma) + chemical suffix -in (2). Related: Chromatid. Cf. chromosome.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for chromatin




A complex of nucleic acids and proteins in the cell nucleus that stains readily with basic dyes and condenses to form chromosomes during cell division.

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

Science definitions for chromatin



The substance distributed in the nucleus of a cell that condenses to form chromosomes during cell division. It consists mainly of DNA and proteins called histones.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.