[ noo-klee-uh-plaz-uh m, nyoo- ]
/ ˈnu kli əˌplæz əm, ˈnyu- /

noun Cell Biology.

the protoplasm of the nucleus of a cell.

Origin of nucleoplasm

First recorded in 1885–90; nucleo- + -plasm
Also called karyoplasm.

Related forms

nu·cle·o·plas·mic, nu·cle·o·plas·mat·ic [noo-klee-oh-plaz-mat-ik, nyoo-] /ˌnu kli oʊ plæzˈmæt ɪk, ˌnyu-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nucleoplasm

  • It comprises the cell-protoplasm and a nucleus imbedded in it whose substance is known as the nucleoplasm.

    Sex|Henry Stanton

British Dictionary definitions for nucleoplasm


/ (ˈnjuːklɪəˌplæzəm) /


the protoplasm in the nucleus of a plant or animal cell that surrounds the chromosomes and nucleolusAlso called: karyoplasm

Derived Forms

nucleoplasmic or nucleoplasmatic, 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

Medicine definitions for nucleoplasm


[ nōōklē-ə-plăz′əm ]


Protoplasm of a cell nucleus.karyoplasm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for nucleoplasm


[ nōōklē-ə-plăz′əm ]

The jellylike material within a cell nucleus, containing the nucleolus and chromatin. See more at nucleus.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.