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nuclear fusion

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noun
  1. fusion(def 4).
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Origin of nuclear fusion

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for nuclear fusion

nuclear fusion

noun
  1. a reaction in which two nuclei combine to form a nucleus with the release of energySometimes shortened to: fusion Compare nuclear fission See also thermonuclear reaction
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012