Definition of nuclear fission in English:

nuclear fission

noun

  • A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.

    • ‘After the outbreak of World War II, the United States mounted a massive project to develop an atomic bomb, the first weapon to use the recently discovered process of nuclear fission as an energy source.’
    • ‘An atomic bomb is a weapon of mass destruction which uses nuclear fission to produce vast amounts of energy.’
    • ‘The development of nuclear fission weapons and later thermonuclear fusion weapons represented an incomparable revolution in weaponry.’
    • ‘NASA's Project Prometheus is making strategic investments in space nuclear fission power and electric propulsion technologies.’
    • ‘Before World War II, German chemists Otto Hahn and Fritz Strassmann discovered nuclear fission.’
    • ‘The element can be prepared artificially in particle accelerators and is a byproduct of nuclear fission reactions.’
    • ‘Their research provided the groundwork for other modern-day solutions that use microwave energy and light to propel ships, rather than nuclear fission.’
    • ‘Many nuclear reactors today are based on a nuclear fission reaction where a uranium atom absorbs a neutron and breaks into two smaller atoms and releases more neutrons, heat, and gamma radiation.’
    • ‘It is irresponsible for scientists to suggest that the large tabulated total energy content of biomass, oil shale, oil sands, heavy oil, and nuclear fission can cover world energy demand for the longterm future.’
    • ‘Because it is a clean and renewable product, it threatened to impact upon the production of energy from coal, oil, gas and nuclear fission, all of which are not renewable and all are polluting.’
    • ‘And no one's going to be able to invent all the hydrogen-powered cars and nuclear fission energy we're supposed to have in the future.’
    • ‘The wartime head of Germany's nuclear programme, Werner Heisenberg, reportedly ‘failed to understand a key aspect of nuclear fission chain reactions’.’
    • ‘And so this was the name that Meitner and Frisch gave to the phenomenon Strassmann and Hahn had observed: nuclear fission.’
    • ‘Nuclear fusion reactions are like nuclear fission reactions, therefore, in the respect that some quantity of mass is transformed into energy.’
    • ‘The products of uranium mining and nuclear fission remain radioactive for hundreds of thousands of years.’
    • ‘Well, we've got these different possible techniques - there's nuclear fusion, nuclear fission, solar power, tidal power and so on.’
    • ‘Now when you were working with Bohr on the structure of the nucleus and in particular, the problem of nuclear fission, when did you first realise that a chain reaction might be a possibility?’
    • ‘The simple atom bomb owed its explosive power to the energy released by nuclear fission, or fusion.’
    • ‘Health officials did not test for Strontium 90, a radioactive carcinogenic byproduct of nuclear fission.’
    • ‘Even before the discovery of nuclear fission, theorists began thinking of an atomic nucleus as something more complicated than a bag of hard particles.’

Pronunciation

nuclear fission

/ˈn(j)uklɪ(ə)r/