nuclear fusion

noun

physics
: a process in which the nuclei of atoms are joined

Examples of nuclear fusion in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Think super-powerful magnets in medical imaging and particle physics experiments; faster circuits that won’t overheat; potential for nuclear fusion plasma confinement. — Sven Badoux, New Atlas, 23 Oct. 2026 Push toward commercial nuclear fusion The funding lands during an intense push toward commercialization. — Aman Tripathi, Interesting Engineering, 23 Oct. 2026 Supernovas occur when massive stars run out of fuel for nuclear fusion, effectively ending their lives. — Robert Lea, Space.com, 14 Oct. 2026 Deep in a star’s core, nuclear fusion pumps out heat and light, which slowly filters up to the star’s surface. — Quanta Magazine, 14 Sep. 2026 See All Example Sentences for nuclear fusion

Browse Nearby Words

Cite this Entry

“Nuclear fusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nuclear%20fusion. Accessed 31 Oct. 2026.

Medical Definition

nuclear fusion

noun
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster