nuclear reactor

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

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.

Not everyone is fully on board, however — including Isaacman, whose ambitious plans involve developing a lunar nuclear reactor by 2030.

From MarketWatch • Mar. 31, 2026

Holtec also has a design for its own small nuclear reactor, and is attempting to get approval to place two of the small reactors at the Palisades site.

From Barron's • Feb. 9, 2026

Five large coal plants and one nuclear reactor in New Jersey have shut down since 2017.

From The Wall Street Journal • Jan. 27, 2026

Slovakia's Prime Minister Robert Fico will meet US President Donald Trump on Saturday, his office said, to sign a deal with Washington towards building a new nuclear reactor.

From Barron's • Jan. 16, 2026

It wasn’t as though he was running on some nuclear reactor; unless he took something in soon, he’d wind down and stop.

From "Endangered" by Eliot Schrefer