Fission is the process of a substance (usually an atom) splitting into two parts. This can happen when the atom is hit by an ion or when it is in a hot environment.

  • Fission is the process that creates atoms.

  • The process of fission is used to create bombs.

Definition of fission


a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy


nuclear fission


reproduction of some unicellular organisms by division of the cell into two more or less equal parts

Nearby Words

fission Pronunciation in a video

Example Sentences for fission

  • 1

    This was the discovery of nuclear fission.

  • 2

    It is one of the products of uranium fission.

  • 3

    The output of fission reactors is controllable.

  • 4

    Many of the bromine isotopes are fission products.

  • 5

    He is interested in history and the nuclear fission.

  • 6

    So what exactly is the issue with the fission primaries

  • 7

    The fission products are iodine, cesium, rubidium and tritium.

  • 8

    The fission reaction was sustained for hundreds of thousands of years.

  • 9

    She was the first to mention the idea of nuclear fission in 1934.

  • 10

    The nuclear fission causes the water to boil, generating steam.