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fission of a uranium nucleus
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 but unequal mass, and releases a few neutrons and about 100 million electron volts of energy. Nuclear fission may occur spontaneously or may be induced by the absorption of a neutron, which can initiate a nuclear chain reaction.
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
To cause (an atom) to undergo fission.
To undergo fission.
[Latin fissiō, fissiōn-, a cleaving, from fissus, split; see fissi-.]
1. the act or process of splitting or breaking into parts
2. (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. (General Physics) short for nuclear fission
[C19: from Latin fissiō a cleaving]
1. the act of cleaving or splitting into parts.
2. the splitting of the nucleus of an atom into nuclei of lighter atoms, accompanied by the release of energy.
3. the division of a biological organism into new organisms as a process of reproduction.v.t.
4. to cause (an atom) to undergo fission.Compare fusion (def. 4).
[1835–45; < Latin fissiō splitting, cleaving]
1. The splitting of the nucleus of an atom into two or more nuclei. The splitting occurs either spontaneously, because the nucleus has many neutrons and is unstable, or because the nucleus has collided with a free-moving neutron. The splitting of a nucleus releases one or more neutrons and energy in the form of radiation. See Note at fusion.
2. A reproductive process in which a single cell splits to form two independent cells that later grow to full size. Bacteria and other single-celled organisms usually reproduce by means of fission. Also called binary fission.
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.
1. A process (spontaneous or induced) during which a heavy atomic nucleus disintegrates into two lighter atoms which together have less mass than the total initial material. This lost mass is converted to energy, the amount is given by Einstein’s equation E=mc2.
2. The splitting of an atom’s nucleus to release subatomic particles and energy.
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|Noun||1.||fission - reproduction of some unicellular organisms by division of the cell into two more or less equal parts|
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 energy|
nuclear reaction - (physics) a process that alters the energy or structure or composition of atomic nuclei
fissionnoun : nuclear fission (ˈfiʃən)
the splitting of the nuclei of atoms. splitsing إنْشِطار деление fissão štěpení die Spaltung fission; spaltning 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 splijtingspalting, fisjon rozszczepienie سورى كېدنه، ما تېدنه، ټوټى كېدنه، دړى وړى كېدنه fissão fisiune атомный распад štiepenie jadra cepitev fisija klyvning, kärnklyvning การแตกตัวของนิวเคลียสของอะตอม (ทางฟิสิกส์) nükleer bölünme 分裂（核分裂） розщеплення (атомного ядра) ٹوٹنے یا بکھرنے سے طاقت کا اخراج ہونا sự phân hạch 裂变
1. división en partes;
2. división de un átomo para ser descompuesto y desplazar energía y neutrones.