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.

The successful launch of the Shippingport Atomic Power Station in 1957 proved that nuclear energy could be safely harnessed to generate electricity for civilian grids.

From The Wall Street Journal • Apr. 24, 2026

He also reiterated his party's pledge to end a block on new nuclear energy and said he would make it a priority from "day one" if he became first minister.

From BBC • Apr. 23, 2026

An estimated 200,000 people gathered in New York City that September to rally against nuclear energy and hear speeches from Jane Fonda and Ralph Nader.

From The Wall Street Journal • Apr. 22, 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

“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