Thesaurus: fission

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1. n. A cleaving, splitting, or breaking up into parts.
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.
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.
4. n. reproduction of some unicellular organisms by division of the cell into two more or less equal parts
5. n. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
6. 1. A cleaving, splitting, or breaking up into parts. 2. (Biol.) 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. 3. (Zoöl.) A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation.
7. A method of asexual reproduction among the lowest (unicellular)organisms by means of a process of self-division, consisting ofgradual division or cleavage of the into two parts, each of whichthen becomes a separate and independent organisms; as when a cell inan animal or plant, or its germ, undergoes a spontaneous division,and the parts again subdivide. See Segmentation, and Cell division,under Division.
8. n:100 n. reproduction of some unicellular organisms by division of the cell into two more or less equal parts n. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy