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.

On an even more ambitious note, the National Aeronautics and Space Administration is pushing to develop nuclear energy on the surface of the moon.

From The Wall Street Journal • Jun. 9, 2026

Radiation levels at the facility remained within normal limits following the attack, although the building's reception was "partially destroyed", according to Ukraine's Energoatom nuclear energy operator.

From Barron's • Jun. 7, 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

The commission’s most important bequest from the Pentagon’s nuclear energy apparatus was the Manhattan District’s network of atomic labs, which Groves had kept intact after the war.

From "Big Science" by Michael Hiltzik