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fusion reactor

American

noun

Physics. a reactor for producing atomic energy by nuclear fusion.

fusion reactor British

noun

a nuclear reactor in which a thermonuclear fusion reaction takes place

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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fusion reactor

The technical challenges, including how to convert the energy produced by a fusion reactor into electricity, remain daunting.

From Los Angeles Times ● Mar. 3, 2026

“The Sun is an enormous, free fusion reactor in the sky. It is super dumb to make tiny fusion reactors on Earth.”

From The Wall Street Journal ● Dec. 18, 2025

The tests were performed under both static and stirred-flow conditions at 873 K to simulate realistic scenarios in fusion reactor coolant systems.

From Science Daily ● Nov. 25, 2024

Xcimer joins dozens of other organisations around the world trying to build a working fusion reactor.

From BBC ● Sep. 9, 2024

The green light on the fusion reactor blinked steadily.

From "Klawde: Evil Alien Warlord Cat" by Johnny Marciano and Emily Chenoweth

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023