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View synonyms for nuclear fission
nuclear fission
[ noo-klee-er fish-uhn ]
nuclear fission
noun
- the splitting of an atomic nucleus into approximately equal parts, either spontaneously or as a result of the impact of a particle usually with an associated release of energy Sometimes shortened tofission Compare nuclear fusion
fission, nuclear
- A nuclear reaction in which a single large nucleus splits into two or more smaller nuclei. In some cases, for example with uranium , energy is released in this process.
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Pronunciation Note
See nuclear ( def ).
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Notes
The fission of uranium 235, an isotope of uranium, supplies energy for nuclear reactors and atomic bombs (see also atomic bomb ).
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Word History and Origins
Origin of nuclear fission1
First recorded in 1885–90
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Example Sentences
Some foreign power, concerned about this country's growing mastery of nuclear fission?
From Project Gutenberg
If it's not a new wrinkle in nuclear fission, it's a gun to shoot around corners and down winding staircases.
From Project Gutenberg
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