nuclear fusion

[noo-klee-er fyoo-zhuhn, nyoo-] / ˈnu kli ər ˈfyu ʒən, ˈnyu- /

NOUN

atomic fusion

Synonyms

WEAK

cold fusion fusion fusion reaction laser-induced fusion thermonuclear fusion thermonuclear reaction

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.

In 25 years, Mike Bechtel thinks we will have a new source of clean, abundant energy: nuclear fusion.

From The Wall Street Journal • Apr. 6, 2026

The instrument is TAE Technologies, a Foothill Ranch-based company working to develop the technology of nuclear fusion as a clean energy source.

From Los Angeles Times • Mar. 3, 2026

These stars could be powered not only by nuclear fusion, but also by energy released when dark matter particles annihilate.

From Science Daily • Jan. 28, 2026

What’s more, Trump Media & Technology Group and nuclear fusion firm TAE Technologies are looking for sites to build a fusion power plant, after agreeing to a merger late last year.

From The Wall Street Journal • Jan. 8, 2026

It assumes the existence of a nuclear fusion reactor— something much safer as well as more efficient than existing fission power plants.

From "Cosmos" by Carl Sagan