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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.

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Nagarajan, with colleagues and a PhD student, have put together a machine with a reactor that uses bubbles to get rid of the algae.

From BBC ● Oct. 23, 2026

As with many new inventions, in order to get the water in and out of the reactor, they have had to improvise.

From BBC ● Oct. 23, 2026

The Nuclear Regulatory Commission is leading the charge, because its role is to oversee reactor safety, laying out potential hazards, including the impact of sloshing waves.

From The Wall Street Journal ● Oct. 22, 2026

In a reactor, heavy water serves as a neutron moderator, meaning it slows down the neutrons released during fission.

From Science Daily ● Oct. 16, 2026

The reactor vessel, which holds the fuel, control rods, and coolant, lies at the center of a nuclear reactor building.

From "Meltdown" by Deirdre Langeland

Beyond small floating reactors, government officials are crafting a regulatory landscape for a commercial nuclear fleet to bring goods across oceans.

From The Wall Street Journal ● Oct. 22, 2026

The technology itself isn’t new—the Navy has used nuclear reactors on submarines for decades—but it has never taken off for international shipping.

From The Wall Street Journal ● Oct. 22, 2026

With space for 6,500 tonnes of uranium, Onkalo will provide permanent storage for spent fuel from Finland's five nuclear reactors.

From Barron's ● Oct. 22, 2026

Amazon would help fund development of a proposed Indiana nuclear plant using X-Energy reactors and intends to buy its electricity.

From Barron's ● Oct. 19, 2026

They remember several long weeks in March 2011 when they turned on the news every day and saw thick smoke billowing from nuclear reactors, carrying potentially deadly radiation into the environment.

From "Meltdown" by Deirdre Langeland


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