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.

Against this backdrop, nuclear energy is re-emerging as a practical solution.

From The Wall Street Journal • Apr. 9, 2026

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

From BBC • Apr. 3, 2026

For the full year, Wall Street forecasts the nuclear energy provider’s profit coming in at $11.69 a share and sales totaling $29.88 billion, representing growth of 24.5% and 17%, respectively compared with 2025.

From Barron's • Mar. 25, 2026

The two sides also signed a deal on nuclear energy at the time, with Chinh saying his country would aim to build a nuclear power plant within five years.

From Barron's • Mar. 22, 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