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fission

fission

18 7.1
A heavy atom's center splits into two or more smaller parts, releasing energy
  • noun
  • /ˈfɪʃən/
  • Specialized
translation icon : fisión
  • Nuclear fission occurs when a heavy atom splits into smaller nuclei, releasing a large amount of energy.
  • nuclear fission
  • fission products
  • fission reaction

That's the opposite of ordinary fission reactors, OK.

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Examples

  • Indeed, this may be the greatest contribution nuclear fission has made to human well-being.

    Academic text (1997)
  • The problem is in this country, fission has basically been frozen because of the high costs involved.

  • In the second column, they will identify solutions offered by nuclear fission power plants.

    Academic text (1999)
  • Their fuel would not be as dangerous as the uranium used in nuclear fission power plants.

    Academic text (1999)
  • When a nuclear bomb goes off, there are so-called fission products produced.

  • The first lesson should be on the processes occurring in nuclear fission and fusion.

    Academic text (1999)
  • Yes, we are closing down nuclear fission reactors all across the world when we need that clean energy more than ever because it's uneconomical.

  • In 1951, enough electricity was generated in an experimental nuclear fission reactor to light four light bulbs.

    Academic text (1999)
  • The discovery of fission has paved the way for advancements in nuclear energy production.

  • Many countries are exploring fission as a means to generate electricity while reducing carbon emissions.

Synonyms

nuclear fission
vsfission
  • Specialized
4 4.9

The center of a heavy atom splits into smaller parts and releases energy

is the same concept but expressed in a shorter single word form

Antonyms

fusion
  • Specialized
73 5.9

A nuclear reaction where the cores of atoms join and release energy

Compounds

nuclear fission
  • Specialized
4 4.9

The center of a heavy atom splits into smaller parts and releases energy

fission bomb
  • Specialized
1 6.7

A bomb that releases a huge amount of energy by splitting heavy atoms like uranium or plutonium

Surface Forms

fission singular
fissions plural

Morphology

fission = fiss + ion

Built from the combining form 'fiss-' plus the noun-forming suffix '-ion'; 'fiss-' is not a standalone English word, so learners cannot reliably derive the meaning from the components.

Etymology

Fission comes from the Latin verb findere, which means 'to split'. Think of a heavy atom splitting like a log and giving off energy, and that's why nuclear fission means an atom breaking into smaller parts and releasing energy.