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

However, as nuclear fusion attracts more public and private capital, Bechtel expects researchers to overcome these problems and make fusion a commercially viable source of energy by 2050.

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

Geothermal energy offers baseload power, while nuclear fusion, though promising, is considered at least 10 years from commercial viability.

From Barron's • Jan. 23, 2026

As the sensitivity of the neutrino telescope improves, it may become possible to probe nuclear fusion in the deep interiors of the nearby stars.

From "Cosmos" by Carl Sagan