Online Google Dictionary

fission 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/ˈfiSHən/,/ˈfiZHən/,
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The action of dividing or splitting something into two or more parts,
  1. (chiefly of atoms) Undergo fission
    • - these heavy nuclei can also fission
Noun
  1. The action of dividing or splitting something into two or more parts
    • - the party dissolved into fission and acrimony
  2. Reproduction by means of a cell or organism dividing into two or more new cells or organisms
    • - bacteria divide by transverse binary fission
  1. reproduction of some unicellular organisms by division of the cell into two more or less equal parts
  2. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
  3. Fission is a studio album by keyboardist Jens Johansson, released in 1998 on Heptagon Records (Europe), Pony Canyon, Inc. (Japan) and Shrapnel Records (United States).
  4. Fission is a Swedish melodic death metal band formed in 2002. The band began as Benny Hägglund's personal project, with the hopes of fusing melody and aggression into his music. ...
  5. The process whereby one item splits to become two; The process of splitting the nucleus of an atom into smaller particles; nuclear fission; The process by which a bacterium splits to form two daughter cells; To cause to undergo fission; To undergo fission
  6. (fissioning) a Yanomamo settlement splits due to internal conflict with one group moving away to form a new village.
  7. becoming two by division of the complete organism (Hawksworth et al., 1983). cf. budding.
  8. The splitting apart of an atom s nucleus, releasing a large amount of heat energy.
  9. The process whereby the nucleus of a particular heavy element splits into (generally) two nuclei of lighter elements, with the release of substantial amounts of energy. The most important fissionable materials are uranium-235 and plutonium-239; fission is caused by the absorption of neutrons.
  10. The splitting of an atom, which releases a considerable amount of energy (usually in the form of heat) that can be used to produce electricity. Fission may be spontaneous, but is usually caused by the nucleus of an atom becoming unstable (or "heavy") after capturing or absorbing a neutron. ...
  11. In nuclear physics, the splitting of the atomic nucleus of a heavy element, resulting in the emission of nuclear energy and possibly causing a chain reaction (with similar results) within a mass of the element. [A84]
  12. 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 are produced along with several neutrons. A large amount of energy is released during the process.
  13. The act or process of splitting into parts.
  14. The division of an atomic nucleus into parts of comparable mass. Generally speaking, fission may occur only in heavier nuclei, such as isotopes of uranium and plutonium. Atomic bombs derive energy from the fission of uranium or plutonium.
  15. The break-up of the nucleus of an atom into two major fragments, plus smaller fragments and free neutrons, when the nucleus is struck by a fast-moving free neutron.
  16. The splitting of a nucleus into at least two other nuclei and the release of a relatively large amount of energy. Two or three neutrons are usually released during this type of transformation.
  17. a process, which, along with fusion, releases energy stored in separated nuclei. During fission, a fissionable nucleus such as plutonium absorbs a neutron, becomes unstable and splits into two nuclei, releasing energy. ...
  18. The release of energy through splitting atoms.
  19. The splitting (breaking apart or fissioning) of the nucleus of a heavy atom such as uranium-235 or plutonium-239. The fission is usually caused by the absorption of a neutron.
  20. The separation of a parent into two or more individuals of approximately equal size. .
  21. in physics, the release of energy when an atomic nucleus more massive than Fe^56 (see binding energy) is split into two or more less massive fragments; the fission of nuclei lighter than Fe^56 is typically endoergic. ...
  22. bombarding a radioactive isotope with a neutron in order to split the nucleus into smaller parts, releasing energy.
  23. form of asexual division in some yeasts in which the cell elongates and then separates along a median wall formed between the two halves.
  24. Here, the splitting up of a population to form new populations.
  25. The process of splitting a heavy nucleus into two lighter nuclei. Spontaneous fission is a type of radioactive decay for some nuclides, such as ^252Cf. In other nuclides fission is induced through the reaction of an incident radiation with the nucleus. ...