from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See nucleoplasm.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. nucleoplasm

from the GNU version of the Collaborative International Dictionary of English

  • n. The protoplasmic substance of the nucleus of a cell; nucleoplasm; -- in opposition to cytoplasm, the protoplasm of the cell.

from The Century Dictionary and Cyclopedia

  • n. The substance of which the more definitely formed portions of the nucleus of a cell, including the nuclear wall, the nucleoli, and the intranucleolar network, are composed. The remaining substance of the cell is called the nuclear matrix or nuclear fluid. Also called nucleoplasm.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the protoplasm that constitutes the nucleus of a cell


Sorry, no etymologies found.


  • Its structure is that of an ordinary cell-nucleus, viz., it consists of a reticulum or karyomitome, the meshes of which are filled with karyoplasm, while connected with, or imbedded in, the reticulum are a number of chromatin masses or chromosomes, which may present the appearance of a skein or may assume the form of rods or loops.

    I. Embryology. 2. The Ovum

  • In fixed cells the nucleus seems to consist of a clear substance or karyoplasm and a network or karyomitome.

    I. Embryology. 1. The Animal Cell


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