fis·sion (f sh  n)n. 1. The act or process of splitting into parts. 2. A nuclear reaction in which an atomic nucleus, especially a heavy nucleus such as an isotope of uranium, splits into fragments, usually two fragments of comparable mass, releasing from 100 million to several hundred million electron volts of energy. 3. Biology An asexual reproductive process in which a unicellular organism divides into two or more independently maturing daughter cells. v. fis·sioned, fis·sion·ing, fis·sions v.tr. To cause (an atom) to undergo fission. v.intr. To undergo fission. [Latin fissi  , fissin-, a cleaving, from fissus, split; see fissi-.] |   fission of a uranium nucleus |
fission [ˈfɪʃən]
n
1. the act or process of splitting or breaking into parts
2. (Life Sciences & Allied Applications / Biology) Biology a form of asexual reproduction in single-celled animals and plants involving a division into two or more equal parts that develop into new cells
3. (Physics / General Physics) short for nuclear fission
[from Latin fissiō a cleaving]
| fission (fshn) 1. The splitting of an unstable atomic nucleus into two or more nuclei. Fission occurs spontaneously, generally when a nucleus has an excess of neutrons, resulting in the inability of the strong force to bind the protons and neutrons together. The fission reaction used in many nuclear reactors and bombs involves the absorption of neutrons by uranium-235 nuclei, which immediately undergo fission, releasing energy and fast neutrons. Compare fusion. 2. A process of asexual reproduction in which a single cell splits to form two identical, independent cells. In fission, the chromosomal DNA replicates before the cell divides. Most bacteria and other prokaryotes reproduce by means of fission. Also called binary fission. |  three nuclei of uranium-235 undergoing fission in a chain reaction |
The process whereby the nucleus of a heavy element splits into (generally) two nuclei of lighter elements, with the release of substantial amounts of energy.
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | fission - reproduction of some unicellular organisms by division of the cell into two more or less equal parts agamogenesis, asexual reproduction - reproduction without the fusion of gametes schizogony - asexual reproduction by multiple fission; characteristic of many sporozoan protozoans |
| 2. |  fission - a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energynuclear reaction - (physics) a process that alters the energy or structure or composition of atomic nuclei |
fission
Translations
fission [ˈfɪʃən] N (Phys) → fisión f (Bio) → escisión f
atomic/nuclear fission → fisión f atómica/nuclear
atomic/nuclear fission → fisión f atómica/nuclear
n fission
the splitting of the nuclei of atoms. splitsing إنْشِطار деление štěpení fission; spaltning die Spaltung σχάση fisión aatomituuma lõhustamine کافش fissio fission בִקוַּע גַרעִינִי अणुओं का विभाजन, जीव कोशों का विभाजन fisija, cijepanje (raspadanje) atoma (mag)hasadás fisi kjarnaklofningur fissione 核分裂 핵분열 skilimas atomkodola šķelšanās pembelahan splijting spalting, fisjon rozszczepienie fissão fisiune атомный распад štiepenie jadra cepitev fisija klyvning, kärnklyvning การแตกตัวของนิวเคลียสของอะตอม (ทางฟิสิกส์) nükleer bölünme 裂變 розщеплення (атомного ядра) ٹوٹنے یا بکھرنے سے طاقت کا اخراج ہونا sự phân hạch 裂变
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