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
That is, a fusion reaction that fuses a hydrogen nucleus and a boron-11 atom instead of two atoms of the hydrogen isotopes deuterium and tritium.
—David Szondy
may 10, New Atlas, 10 May 2025
The Slow Roasted Eggplant — happily still available this month — was a surprise on a Korean fusion menu.
—Michael James Rocha, San Diego Union-Tribune, 9 May 2025
Perhaps, but likability goes a long way, and this fusion of Northern Exposure, Reservation Dogs and Schitt’s Creek is a sweet, but not cloyingly sweet, corrective to so much of what’s dark and brooding in the world and on TV.
—Daniel Fienberg, HollywoodReporter, 8 May 2025
His fusion of spiritual philosophy and AI engineering challenges conventional thinking, proving that responsible AI is not just about mitigating harm but about fostering a deeper, collective consciousness in technology.
—Jason Phillips, USA Today, 7 May 2025
See All Example Sentences for fusion
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David Szondy
may 10, New Atlas, 10 May 2025
The Slow Roasted Eggplant — happily still available this month — was a surprise on a Korean fusion menu.
—Michael James Rocha, San Diego Union-Tribune, 9 May 2025
Perhaps, but likability goes a long way, and this fusion of Northern Exposure, Reservation Dogs and Schitt’s Creek is a sweet, but not cloyingly sweet, corrective to so much of what’s dark and brooding in the world and on TV.
—Daniel Fienberg, HollywoodReporter, 8 May 2025
His fusion of spiritual philosophy and AI engineering challenges conventional thinking, proving that responsible AI is not just about mitigating harm but about fostering a deeper, collective consciousness in technology.
—Jason Phillips, USA Today, 7 May 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 17 May. 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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