Fission meaning

fĭshən, fĭzh-
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Fission is defined as the action of dividing into two or more parts.

When everyone in your club disagrees on a fundamental issue and you all split up and three separate new clubs are formed, this is an example of fission.

When the nuclei of atoms divide into two parts and there is energy created by the split, this is an example of fission.

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The act or process of splitting into parts.
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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.
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(biology) An asexual reproductive process in which a unicellular organism divides into two or more independently maturing daughter cells.
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To cause (an atom) to undergo fission.
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noun
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To undergo fission.
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A splitting apart; division into parts.
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(biol.) A form of asexual reproduction, found in various simple plants and animals, in which the parent organism divides into two or more approximately equal parts, each becoming an independent individual.
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To undergo or cause to undergo nuclear fission.
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The act or process of splitting into parts.
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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 .
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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.
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The process whereby one item splits to become two.
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(physics) The process of splitting the nucleus of an atom into smaller particles; nuclear fission.
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(biology) The process by which a bacterium splits to form two daughter cells.
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To cause to undergo fission.
verb
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(intransitive) To undergo fission.
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(biology) An asexual reproductive process in which a unicellular organism divides into two or more independently maturing daughter cells.
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Origin of fission

  • Latin fissiō fissiōn- a cleaving from fissus split fissi–

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin fissiōnem, accusative singular of fissiō (“the act of breaking up”), from findō (“split, divide”).

    From Wiktionary