FISSION - Definiția din dicționar
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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
4. (Physics) The act or process of disintegration of an atomic nucleus into two or more smaller pieces; called also