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more about fission
fission |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Fission \Fis"sion\, n. [L. fissio. See {Fissure}.] 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. (Zo["o]l.) A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See {Strobilation}. From WordNet r 1.6 [wn]: fission n 1: a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy [syn: {nuclear fission}] 2: reproduction of some unicellular organisms by division of the cell into two more or less equal parts
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