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

New polling from YouGov suggests growing support for nuclear energy in Scotland, with the majority of people now backing it as part of the country's energy supply.

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

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

But Dad’s main interest was energy: thermal energy, nuclear energy, solar energy, electrical energy, and energy from the wind.

From "The Glass Castle" by Jeannette Walls