nucleosome

[noo-klee-uh-sohm, nyoo-]

noun Cell Biology.

any of the repeating subunits of chromatin occurring at intervals along a strand of DNA, consisting of DNA coiled around histone.

Nearby words

  1. nucleoprotein,
  2. nucleorrhexis,
  3. nucleosidase,
  4. nucleoside,
  5. nucleoside analogue,
  6. nucleosynthesis,
  7. nucleotidase,
  8. nucleotide,
  9. nucleotides,
  10. nucleotidyltransferase

Origin of nucleosome

First recorded in 1960–65; nucleo- + -some3

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for nucleosome

nucleosome

noun

a repeating structural unit of chromatin that contains DNA and histones
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 nucleosome

nucleosome

[nōōklē-ə-sōm′]

n.

Any of the repeating subunits of chromatin, consisting of a DNA chain coiled around a core of histones.
Related formsnu′cle•o•somal (-sōməl) adj.


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

Science definitions for nucleosome

nucleosome

[nōōklē-ə-sōm′]

Any of the repeating subunits of chromatin in eukaryotic cells, consisting of a DNA chain coiled around a core of histones. See Note at histone.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.