nuclear reactor

[noo-klee-er ree-ak-ter, nyoo-] / ˈnu kli ər riˈæk tər, ˈnju- /

NOUN

atomic reactor

Synonyms

STRONGEST

reactor

WEAK

atomic furnace atomic pile atomic power plant atomic reactor breeder reactor chain reactor core reactor fast breeder reactor neutron factory nuclear furnace nuclear power plant pile plutonium reactor reactor pile thermonuclear reactor uranium reactor

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.

Two other recent debuts—HVAC company Madison Air, the year’s biggest IPO so far, and nuclear reactor firm X-Energy —have both performed solidly for example.

From Barron's • May 7, 2026

It also has a stake in Westinghouse, which designed the most prominent large next-gen American nuclear reactor.

From Barron's • Apr. 30, 2026

Will Summerlin at Autopilot Ventures buys the builders, including data-center contractors, optical interconnect startups and small modular nuclear reactor companies.

From MarketWatch • Apr. 30, 2026

A gigawatt is roughly equivalent to the power generated by a nuclear reactor.

From Los Angeles Times • Apr. 27, 2026

The challenge of running a nuclear reactor lies in keeping the number of bouncing neutrons inside it steady.

From "Meltdown" by Deirdre Langeland