noun, often attributive
fu·​sion | \ ˈfyü-zhᵊn How to pronounce fusion (audio) \

Definition of fusion

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 RepublicansNew 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

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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.
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Recent Examples on the Web Backed by renowned musicians, Glenn-Copeland delivered a unique fusion of jazz, folk, and classical music. BostonGlobe.com, "Doc Talk: Medical practice, paternity test, musical inspiration," 8 Apr. 2021 Expect to see fashion enter the non-fungible token (NFT) space, diving deeper into the fusion of art-meets-commerce, and brands focusing on global e-commerce entering into Russia, Africa and Southeast Asia. Syama Meagher, Forbes, "How Will Businesses Thrive In A Post-COVID World?," 6 Apr. 2021 On Wednesday evening, that program allowed nine dancers to perform a fusion of street dance, ballroom and hip-hop in the lobby of the Guggenheim Museum, as part of the Works and Process bubble residencies. New York Times, "Live Performing Arts Are Returning to N.Y.C., but Not All at Once," 1 Apr. 2021 The lightning strikes created fulgurites, which are tubes of glass formed by the fusion of quartz sand or rock from a lightning strike, according to the Utah Geological Survey. Doyle Rice, USA TODAY, "How did early life on Earth start? It could have been lightning, study says.," 17 Mar. 2021 The sculpture’s material allusions to carpet, insulation and turf suddenly seem a fusion of prayer rugs, home and the landscape underfoot, out of which a daunting but not insurmountable obstacle rises. Los Angeles Times, "Review: Desert X has a great big wall. Beyond that, this art biennial feels thin," 16 Mar. 2021 The ideal fusion of form and function designs from Pleats Please Issey Miyake will take you anywhere—unwrinkled. Fiorella Valdesolo, WSJ, "10 Cult Fashion Items That Stand the Test of Time," 13 Mar. 2021 The Mission: Home to Mission Dolores Park, as well as some of the best taco and burrito stands in town, and trendy shops, restaurants, and bars, the Mission is a fusion of young San Francisco tech professionals and Latinx culture. Maya Kachroo-levine, Travel + Leisure, "San Francisco Travel Guide," 2 Mar. 2021 Since the Moors love to use flat decorations, usually, with geometrical lines the silversmiths became builders, and the fusion of an economic situation led to the plateresque style. San Diego Union-Tribune, "From the Archives: The San Diego Museum of Art opened in Balboa Park 95 years ago," 28 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fusion

14th century, in the meaning defined at sense 1

History and Etymology for fusion

borrowed from Medieval Latin fūsiōn-, fūsiō "process of pouring, casting of molten metal," going back to Latin, "process of pouring, effusion," from fud-, variant stem of fundere "to pour, shed, cast (liquid metal)" (Medieval Latin also, "to melt down, make liquid") + -tiōn-, -tiō, suffix of verbal action — more at found entry 5

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Learn More about fusion

Time Traveler for fusion

Time Traveler

The first known use of fusion was in the 14th century

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Statistics for fusion

Last Updated

11 Apr 2021

Cite this Entry

“Fusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fusion. Accessed 17 Apr. 2021.

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More Definitions for fusion



English Language Learners Definition of fusion

: a combination or mixture of things
physics : a process in which the nuclei of atoms are joined
: a type of popular music that combines different styles (such as jazz and rock)


fu·​sion | \ ˈfyü-zhən How to pronounce fusion (audio) \

Kids Definition of fusion

1 : an act of fusing or melting together
2 : union by or as if by melting
3 : union of atomic nuclei to form heavier nuclei resulting in the release of enormous quantities of energy


noun, often attributive
fu·​sion | \ ˈfyü-zhən How to pronounce fusion (audio) \

Medical Definition of fusion

1a : 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
(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

Other Words from fusion

fusional \ -​ᵊl How to pronounce fusion (audio) \ adjective

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Comments on fusion

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