Definitions

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.

And a Gallup poll from 2025 shows that 61% of Americans once again support nuclear energy.

From The Wall Street Journal • Apr. 22, 2026

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

Waste management and public concerns regarding the safety of nuclear energy persist.

From BBC • Apr. 3, 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