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.

A power purchasing agreement with nuclear energy start-up Helion Energy was flagged as particularly worrisome, given the firm has yet to ever deliver any power.

From BBC • May 15, 2026

The Trump administration announced another $94 million in cost-sharing grants as it continues to encourage the buildout of the nuclear energy sector.

From Barron's • May 15, 2026

However, Wang added, “China supports Iran’s efforts to safeguard its national sovereignty and security,” including its right to develop nuclear energy for peaceful purposes.

From Slate • May 7, 2026

SpaceX alumni have gone on to found companies focused on AI and robotics, nuclear energy and manufacturing.

From MarketWatch • May 7, 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