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.

Switzerland is less reliant on oil-and-gas than the neighboring eurozone, given its higher reliance on Alpine hydroelectricity and nuclear energy.

From The Wall Street Journal • Jun. 4, 2026

The cruel irony is that this danger is arriving precisely as the world is rushing toward nuclear energy.

From Salon • May 21, 2026

The Trump administration announced another $94 million in cost-sharing grants as it continues to encourage the buildout of the nuclear energy sector.

From Barron's • May 15, 2026

There are also early conversations around nuclear energy co-operation as Kenya looks to diversify its long-term energy strategy.

From BBC • May 12, 2026

“It may be that the day of useful nuclear energy is not so far distant after all,” he wrote to his fellow cyclotron builder Alexander Allen.

From "Big Science" by Michael Hiltzik