Fission



noun
1.
(splitting of the nucleus of certain atoms, with release of energy, splitting of biological calls into two or more parts, each becoming an independent individual) cellular fission ការបែងចែក, nuclear fission ការផ្ទុះបរមាណូ
ENGLISH MEANING
noun
1.
A cleaving, splitting, or breaking up into parts.
2.
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.
3.
A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones.