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Word of the Day Tuesday, June 9, 2026

fission

/ˈfɪʃən/ noun, verb · British & US
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What does fission mean?

noun, verb

The process of splitting or dividing into two or more parts, especially in a violent or sudden manner. In nuclear physics, the process of splitting an atomic nucleus into two or more smaller nuclei.

Example

"The nuclear fission reaction released a massive amount of energy."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for fission

Antonyms of fission

Rhymes with fission

Etymologically related