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.
The hardware will support the testing programme for the company’s Texatron Fusion Engine, which explores an alternative path to nuclear fusion. — Aman Tripathi, Interesting Engineering, 30 Aug. 2026 As part of its nuclear fusion processes, the Sun produces a particularly interesting isotope of helium, known as helium-3. — Eric Berger, ArsTechnica, 26 Aug. 2026 Dark stars are hypothetical primordial stars that, rather than producing energy through nuclear fusion, are instead powered by self-annihilating dark matter within their cores. — Robert Lea, Space.com, 21 Aug. 2026 Something so bright isn’t fueled with nuclear fusion, which rules out traditional stellar objects. — Andrew Paul, Popular Science, 12 Aug. 2026 See All Example Sentences for nuclear fusion

Rhymes for nuclear fusion

See All Rhymes for nuclear fusion

Browse Nearby Words

nuclear fuel
nuclear fusion
nuclearism
See all Nearby Words

Cite this Entry

“Nuclear fusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nuclear%20fusion. Accessed 1 Sep. 2026.

Copy Citation

Medical Definition

nuclear fusion

noun
: fusion sense 3
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Why does English have so many silent letters?

7 Pairs of Commonly Confused Words
See More

Popular in Wordplay

See More

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Even More Words That Sound Like Insults But Aren't

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
skateboard-dog-hat
Wordmaxxing Slang Quiz Give your vocabulary a glow up by getting sendy w...
See All