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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.

While conventional nuclear plants split heavy atoms in a process called fission, fusion does the opposite: It combines light atomic nuclei into heavier ones, releasing enormous energy without greenhouse-gas emissions or long-lived radioactive waste.

From The Wall Street Journal • Jun. 9, 2026

Next, Nasa wants to build nuclear and solar power facilities on the Moon, including fission reactors.

From BBC • May 26, 2026

“There’s really strong bipartisan support for regulation on fusion power plants that does not mirror what’s done on fission power plants,” Beyer said.

From MarketWatch • May 18, 2026

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

From Science Daily • Mar. 28, 2026

But it should also be remembered that the balance among the relatively small powers around the Aegean could not last forever; history has a way of alternating periods of political fission and accretion.

From "Circumference" by Nicholas Nicastro




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