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karyosome

[ kar-ee-uh-sohm ]

noun

, Cell Biology.
  1. Also called chromocenter. any of several masses of chromatin in the reticulum of a cell nucleus.
  2. a chromosome.

karyosome

/ ˈkærɪəʊˌsəʊm /

noun

  1. any of the dense aggregates of chromatin in the nucleus of a cell
  2. the nucleus of a cell
“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
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Word History and Origins

Origin of karyosome1

First recorded in 1885–90; karyo- + -some 3
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Example Sentences

The nucleus is dividing up into a number of daughter-nuclei (d.n), each with a conspicuous karyosome (ky).

Each ♀ merozoite has a chromatic nucleus (n) without a karyosome.

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