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

  • n. Biology The process in cell division by which the nucleus divides, typically consisting of four stages, prophase, metaphase, anaphase, and telophase, and normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes. Also called karyokinesis.
  • n. Biology The entire process of cell division including division of the nucleus and the cytoplasm.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.

from the GNU version of the Collaborative International Dictionary of English

  • n. See karyokinesis.

from The Century Dictionary and Cyclopedia

  • n. Splitting of the chromatin of a nucleus, or subdivision of any minute granular bodies embedded in living protoplasm. The mitosis occurring in nuclear kinetics is commonly qualified as karyomitosis.
  • n. A figure occurring during mitosis as a result of that process.

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

  • n. cell division in which the nucleus divides into nuclei containing the same number of chromosomes


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

Greek mitos, warp thread + -osis.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From German Mitosis, from Ancient Greek μίτος (mitos, "thread") + -osis, probably in reference to the thread-like chromatin seen during mitosis.


  • Science keeps eddying into its past: the word mitosis—Greek for “thread”—is resonant here again.

    The Emperor of All Maladies

  • All life divided through mitosis, which is asexual reproduction, not female.

    Think Progress » Zakaria: Rumsfeld ‘Seems In A Parallel Universe and Slightly Deranged’

  • The entire process of cell division, referred to as mitosis, takes only about an hour.


  • In the simplest form of reproduction, one cell cutting itself in two to make two new ones, known as mitosis, the change begins in the nucleus, or kernel.

    Preventable Diseases

  • Well, it was more about the way chromosomes get divided or doubled in two processes called mitosis and meiosis. Top Stories

  • (in a process called mitosis, depicted on the right), their genomes grow shorter until they reach a point where replication can no longer occur.

    [Geeks Are Sexy] Technology News

  • Russian, German, and other biophotonics experts, adopting the term "biophotons" from Fritz Albert Popp, have theorized that they may be involved in various cell functions, such as mitosis, or even that they may be produced and detected by the DNA in the cell nucleus.

    A Biophotonic Theory of Evolution

  • The intricate physiological processes which accompany this "mitosis" have been very closely studied of late years.

    The Evolution of Man — Volume 1

  • Mr. Kahn's lectures seem almost like prerecorded peer teaching, like the smartest kid in the dorm is helping you understand "mitosis".

    CHE > Latest news

  • We will feel hope with the transparency of our entrapment, and just like on a cellular level, the walls of our universes will become beyond the process of 'mitosis', but that with an equilibrium flow, naturally progressing our youth into adolescence.

    The Earth Times Online Newspaper


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  • For sentimental reasons, probably my favourite joke of all time. :)

    March 11, 2008

  • Oh gawd, ofravens. ;-)

    March 11, 2008

  • Q: What did the biologist say when he dropped his slides on the lab floor?

    A: Don't step on mitosis!

    March 10, 2008