fusion
US /ˈfjuː.ʒən/
UK /ˈfjuː.ʒən/
1.
the process or result of joining two or more things together to form a single entity
:
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The band's music is a fusion of jazz and rock.
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The company announced a fusion with a rival firm.
2.
the process or result of joining two or more atomic nuclei to form a single heavier nucleus with a consequent release of energy
:
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Nuclear fusion powers the sun.
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Scientists are working on controlled fusion for energy production.