often attributive
1
: the act or process of liquefying or rendering plastic by heat
2
: a union by or as if by melting: such as
a
: a merging of diverse, distinct, or separate elements into a unified whole
Opera is a fusion of several arts.
b
: a political partnership : coalition
a fusion of Democrats and independent Republicans—
New York Times
New York Times
c
: popular music combining different styles (such as jazz and rock)
d
: food prepared using techniques and ingredients of two or more ethnic or regional cuisines
a restaurant that specializes in Indian-Chinese fusion
called also fusion cuisine
3
: the union of atomic nuclei to form heavier nuclei resulting in the release of enormous quantities of energy when certain light elements unite
nuclear fusion
Examples of fusion in a Sentence
a fusion of different methods
a fusion of musical styles
The show is a fusion of news and entertainment.
The fusion of different cultural influences is evident in her sculpture.
Recent Examples on the Web
Leading vocals, production, and songwriting, the DJ and producer tapped into the country and dance music fusion that bubbled up in the early 2010s.
—Larisha Paul, Rolling Stone, 14 Mar. 2025
Brown dwarfs are stellar objects that are born like stars but fail to gather enough matter to reach the masses needed to trigger the fusion of hydrogen to helium in their cores.
—Robert Lea, Space.com, 14 Mar. 2025
Water purification technologies offer a unique fusion of profitability and purpose, positioning forward-thinking investors at the forefront of a global movement toward cleaner, more sustainable water.
—Sahit Muja, Forbes, 14 Mar. 2025
Those harmonies pulled every one of the songs toward the spiritual even when the rhythms are unmistakably designed for a party, a fusion that can be invigorating.
—Stephen Thomas Erlewine, Rolling Stone, 14 Mar. 2025
See All Example Sentences for fusion
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Larisha Paul, Rolling Stone, 14 Mar. 2025
Brown dwarfs are stellar objects that are born like stars but fail to gather enough matter to reach the masses needed to trigger the fusion of hydrogen to helium in their cores.
—Robert Lea, Space.com, 14 Mar. 2025
Water purification technologies offer a unique fusion of profitability and purpose, positioning forward-thinking investors at the forefront of a global movement toward cleaner, more sustainable water.
—Sahit Muja, Forbes, 14 Mar. 2025
Those harmonies pulled every one of the songs toward the spiritual even when the rhythms are unmistakably designed for a party, a fusion that can be invigorating.
—Stephen Thomas Erlewine, Rolling Stone, 14 Mar. 2025
See All Example Sentences for fusion
Cite this Entry
“Fusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fusion. Accessed 18 Apr. 2025.
Copy CitationKids Definition
fusion
noun
fu·sion
ˈfyü-zhən 
1
: the act or process of melting or making fluid by heat
2
: union by or as if by melting
3
: the union of light atomic nuclei to form heavier nuclei resulting in the release of enormous quantities of energy
Medical Definition
fusion
noun
fu·sion
ˈfyü-zhən
often attributive
1
a
: the act or process of liquefying or rendering plastic by heat
b
: the liquid or plastic state induced by heat
2
: a union by or as if by melting together: as
a
: a merging of diverse elements into a unified whole
specifically
: the blending of retinal images in binocular vision
b
: a combination of ingredients achieved by heating and mixing together
c
(1)
: a blend of sensations, perceptions, ideas, or attitudes such that the component elements can seldom be identified by introspective analysis
(2)
: the perception of light from a source that is intermittent above a critical frequency as if the source were continuous
called also flicker fusion
compare flicker
d
: the surgical immobilization of a joint see spinal fusion
3
: the union of atomic nuclei to form heavier nuclei resulting in the release of enormous quantities of energy when certain light elements unite
called also nuclear fusion
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