fission.
The process whereby one item splits to become two.
Meaning & usage
The process whereby one item splits to become two.
nuclear fission: The process of splitting the nucleus of an atom into smaller particles.
The process by which a bacterium splits to form two daughter cells.
Where this word comes from
Borrowed from Latin fissiōnem, accusative singular of fissiō (“the act of breaking up”), from findō (“split, divide”).
To cause to undergo fission.
To undergo fission.
Where this word comes from
Borrowed from Latin fissiōnem, accusative singular of fissiō (“the act of breaking up”), from findō (“split, divide”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.