Definitions

nuclear energy

[noo-klee-er en-er-jee, nyoo-] / ˈnu kli ər ˈɛn ər dʒi, ˈnju- /

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.

Over the past six months, the Russell 2000 benefited from a boom in shares of technology stocks and, in particular, highly-speculative names tied to popular themes like quantum computing, nuclear energy, artificial intelligence and biotechnology.

From MarketWatch • Jun. 30, 2026

In graduate school he studied with scientists who had worked on the Manhattan Project, and he worried that supporting nuclear energy could lead to the proliferation of weapons.

From Salon • Jun. 26, 2026

Radiation levels at the facility remained within normal limits following the attack, although its fuel reception building was "partially destroyed", according to Ukraine's nuclear energy operator, Energoatom.

From Barron's • Jun. 7, 2026

Rising power use at AI data centers is boosting demand for uranium-fueled nuclear energy.

From The Wall Street Journal • May 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