/ ˈfjuːʒn; NAmE / noun
1.
[ U , sing. ] the process or result of joining two or more things together to form one :
the fusion of copper and zinc to produce brass
The movie displayed a perfect fusion of image and sound.
2.
(also ˌnuclear ˈfusion ) [ U ] ( physics ) the act or process of combining the nuclei (= central parts) of atoms to form a heavier nucleus , with energy being released
—compare fission
3.
[ U ] modern music that is a mixture of different styles, especially jazz and rock
4.
[ U ] cooking that is a mixture of different styles :
French–Thai fusion
For more information see the Cultural Guide
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WORD ORIGIN
mid 16th cent.: from Latin fusio(n-) , from fundere pour, melt.