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Definitions

reactor

[ree-ak-ter] / riˈæk tər /
NOUN
electrical device
Synonyms


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

Dan Eggers, Constellation’s senior vice president for finance, told Barron’s last week that any new reactor investments would have to clear a high bar.

From Barron's • Mar. 30, 2026

Investors are cautious about new nuclear reactor investments due to high costs, preferring clear paths and risk mitigation.

From Barron's • Mar. 30, 2026

The sun’s mass makes it a gravity-powered fusion reactor, but on Earth, scientists need other ways to create plasma—a superheated, electrically charged gas—and confine it to force atoms to collide.

From The Wall Street Journal • Mar. 28, 2026

In a reactor, many of the uranium 235 nuclei split apart, transforming into radioactive isotopes such as iodine 131 and cesium 137.

From "Meltdown" by Deirdre Langeland