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.

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

TAE—whose backers include Alphabet, Chevron and Goldman Sachs—is one of the oldest and most prominent companies working in the relatively nascent field of commercial nuclear fusion.

From The Wall Street Journal • Feb. 27, 2026

Stars shine because nuclear fusion in their cores converts hydrogen into helium, creating outward pressure that counteracts gravity.

From Science Daily • Feb. 14, 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