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

It added that "the targeting of peaceful nuclear energy facilities is a flagrant violation of international law, the UN charter, and the principles of humanitarian law".

From BBC • May 17, 2026

However, Wang added, “China supports Iran’s efforts to safeguard its national sovereignty and security,” including its right to develop nuclear energy for peaceful purposes.

From Slate • May 7, 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