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Definitions

fission

[fish-uhn] / ˈfɪʃ ən /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In one scenario, a rapidly spinning massive star explodes and splits into two smaller neutron stars through a process called fission.

From Science Daily • Apr. 24, 2026

"We therefore needed an energy acceptor that selectively captures the multiplied triplet excitons after fission."

From Science Daily • Mar. 28, 2026

Today, all of the world’s nuclear energy is generated from fission, the process of splitting the nucleus of an atom.

From Barron's • Dec. 18, 2025

The fusion process creates energy by joining atoms together, while nuclear fission creates energy when atoms are split apart.

From The Wall Street Journal • Dec. 10, 2025

A New York Daily News editorial guessed that this was a hydrogen bomb, perhaps five to ten times as powerful as the fission bomb that destroyed the Japanese city of Hiroshima.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin




Vocabulary lists containing fission