"fission" Definition

Definitions for the word "fission" from multiple English dictionaries.

1. n.
A cleaving, splitting, or breaking up into parts.
Source: The 1913 Webster Unabridged Dictionary, 1913
2. n.
A method of asexual reproduction among the lowest (unicellular) organisms by means of a process of self-division, consisting of gradual division or cleavage of the into two parts, each of which then becomes a separate and independent organisms; as when a cell in an animal or plant, or its germ, undergoes a spontaneous division, and the parts again subdivide. See Segmentation, and Cell division, under Division.
Source: The 1913 Webster Unabridged Dictionary, 1913
3. n.
A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation.
Source: The 1913 Webster Unabridged Dictionary, 1913
4. n.
1 splitting of a heavy atomic nucleus, with a release of energy. 2 cell division as a mode of reproduction. v. (cause to) undergo fission. fissionable adj. [latin: related to *fissure]
Source: Oxford English Dictionary, 1884

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