nuclear energy

[noo-klee-er en-er-jee, nyoo-] / ˈnu kli ər ˈɛn ər dʒi, ˈnyu- /

NOUN

radioactive energy source

Synonyms

STRONGEST

atomic energy nuclear power

WEAK

atomic power fission power fusion power nuclear fission power nuclear fusion power thermonuclear energy thermonuclear power

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.

Against this backdrop, nuclear energy is re-emerging as a practical solution.

From The Wall Street Journal • Apr. 9, 2026

New polling from YouGov suggests growing support for nuclear energy in Scotland, with the majority of people now backing it as part of the country's energy supply.

From BBC • Apr. 3, 2026

And nuclear energy seems to be back in fashion as part of a home-grown European energy mix - in the UK as well as the EU.

From BBC • Apr. 3, 2026

Morgan Stanley’s optimism is in line with the bullish, AI-driven, narrative around nuclear energy, which propelled Constellation Energy stock to gains of 58% in 2025 and 91% in 2024.

From Barron's • Mar. 25, 2026

Still, the idea of attempting to release nuclear energy in the middle of a city of three million made Groves very nervous.

From "Bomb" by Steve Sheinkin