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.

As for US demands, Tehran has insisted since 2003 it is not seeking a nuclear weapon but has a right to enrich for civilian nuclear energy purposes.

From Barron's • Mar. 26, 2026

Morgan Stanley’s optimism is in line with the bullish, AI-driven, narrative around nuclear energy, which propelled Constellation Energy stock to gains of 58% in 2025 and 91% in 2024.

From Barron's • Mar. 25, 2026

India and Canada have announced a host of agreements, including a 10-year nuclear energy deal, after their prime ministers met in Delhi to reset ties that plummeted due to diplomatic tensions.

From BBC • Mar. 2, 2026

"At the same time, we will also advance our cooperation in areas such as civil nuclear energy and space."

From Barron's • Feb. 26, 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