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 RepublicansN. Y. 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

MIXER Network after work Socialize with other young professionals at an Asian fusion restaurant and cocktail bar at this event from BVD Boston. Max Jungreis, BostonGlobe.com, "Business Agenda," 23 July 2019 The 815-square-foot Mexican-Asian fusion restaurant called the Yellow Green Farmers Market on Sheridan Street its home for four years before owner Cesar Cifuentes moved to this permanent spot. Catie Wegman, sun-sentinel.com, "Downtown Hollywood culinary crawl: Meet the city’s nine new restaurants and bars," 12 July 2019 That night, book a supper at one of the restaurants on Porto Cervo’s beloved Piazzetta—choose between the classic fish spot, Il Pescatore, or Novikov, an Asian fusion restaurant from owner and Russian restaurateur Arkady. Mark Ellwood, Condé Nast Traveler, "The Best Places to Visit in August," 26 June 2019 Quest Hill, the manager of Tac-oh in the arty South First Area (SoFA), said the Mexican fusion restaurant opened a downtown location in 2017 because of the growth in the restaurant-friendly district. Sunay Sanghani, The Mercury News, "The secret’s out: Downtown San Jose is the latest Bay Area hot spot," 21 June 2019 Crecia’s Kitchen, an Asian-Cajun fusion restaurant, is planning to open in the Summerwood area before the end of June. Chris Shelton, Houston Chronicle, "Roundups: Asian-Cajun fusion eatery Crecia’s Kitchen set to open near Summerwood," 20 June 2019 Previously, patients who would’ve been eligible for the Mobi-C, had to have a spinal fusion. Tj Gibson, azcentral, "Is Mobi-C for me? The new cervical disc solution.," 14 Mar. 2018 At this Korean-fusion joint the Gang Nam Dog is made with roasted pork belly, pickled cucumber, nori flakes, sesame seeds, green onions and Korean chili sauce—and can be ordered with a fried egg on top. Stephanie Emma Pfeffer, PEOPLE.com, "The Best Hot Dogs in Every State and Washington, D.C.," 17 July 2019 The second night of the Paul Brown Monday Night Jazz series in Hartford’s Bushnell Park starts at 6 p.m. on July 15 start with Jocelyn Pleasant and The Lost Tribe, an Afro-fusion band. Courant Staff, courant.com, "Six things to do this week," 7 July 2019

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

Statistics for fusion

Last Updated

13 Aug 2019

Look-up Popularity

Time Traveler for fusion

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

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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 fusional (audio) \ adjective

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Comments on fusion

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